55791507 has 8 divisors (see below), whose sum is σ = 74427840. Its totient is φ = 37174760.

The previous prime is 55791497. The next prime is 55791509. The reversal of 55791507 is 70519755.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55791507 - 2¹² = 55787411 is a prime.

It is a super-2 number, since 2×55791507² = 6225384506662098, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55791509) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4132 + ... + 11342.

It is an arithmetic number, because the mean of its divisors is an integer number (9303480).

Almost surely, 2^55791507 is an apocalyptic number.

55791507 is a deficient number, since it is larger than the sum of its proper divisors (18636333).

55791507 is a wasteful number, since it uses less digits than its factorization.

55791507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9793.

The product of its (nonzero) digits is 55125, while the sum is 39.

The square root of 55791507 is about 7469.3712586803. The cubic root of 55791507 is about 382.1108451846.

The spelling of 55791507 in words is "fifty-five million, seven hundred ninety-one thousand, five hundred seven".