55495597500 has 480 divisors, whose sum is σ = 208659207680. Its totient is φ = 12488256000.

The previous prime is 55495597429. The next prime is 55495597501. The reversal of 55495597500 is 579559455.

55495597500 is a `hidden beast` number, since 5 + 5 + 49 + 5 + 5 + 97 + 500 = 666.

It is a super-2 number, since 2×55495597500² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55495597501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 31656624 + ... + 31658376.

Almost surely, 2^55495597500 is an apocalyptic number.

55495597500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55495597500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104329603840).

55495597500 is an abundant number, since it is smaller than the sum of its proper divisors (153163610180).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55495597500 is a wasteful number, since it uses less digits than its factorization.

55495597500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1860 (or 1837 counting only the distinct ones).

The product of its (nonzero) digits is 7087500, while the sum is 54.

The spelling of 55495597500 in words is "fifty-five billion, four hundred ninety-five million, five hundred ninety-seven thousand, five hundred".