55524779 has 4 divisors (see below), whose sum is σ = 55550376. Its totient is φ = 55499184.

The previous prime is 55524773. The next prime is 55524787. The reversal of 55524779 is 97742555.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55524779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55524773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9209 + ... + 13994.

It is an arithmetic number, because the mean of its divisors is an integer number (13887594).

Almost surely, 2^55524779 is an apocalyptic number.

55524779 is a deficient number, since it is larger than the sum of its proper divisors (25597).

55524779 is a wasteful number, since it uses less digits than its factorization.

55524779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25596.

The product of its digits is 441000, while the sum is 44.

The square root of 55524779 is about 7451.4950848806. The cubic root of 55524779 is about 381.5009404462.

The spelling of 55524779 in words is "fifty-five million, five hundred twenty-four thousand, seven hundred seventy-nine".