55500005 has 32 divisors (see below), whose sum is σ = 74850048. Its totient is φ = 39168000.

The previous prime is 55499993. The next prime is 55500031. The reversal of 55500005 is 50000555.

It is a happy number.

It is not a de Polignac number, because 55500005 - 2⁸ = 55499749 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55500005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 538784 + ... + 538886.

It is an arithmetic number, because the mean of its divisors is an integer number (2339064).

Almost surely, 2^55500005 is an apocalyptic number.

55500005 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

55500005 is a deficient number, since it is larger than the sum of its proper divisors (19350043).

55500005 is a wasteful number, since it uses less digits than its factorization.

55500005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317.

The product of its (nonzero) digits is 625, while the sum is 20.

The square root of 55500005 is about 7449.8325484537. The cubic root of 55500005 is about 381.4441927474. Note that the first 3 decimals are identical.

The spelling of 55500005 in words is "fifty-five million, five hundred thousand, five".