55265531 has 4 divisors (see below), whose sum is σ = 56759232. Its totient is φ = 53771832.

The previous prime is 55265519. The next prime is 55265543. The reversal of 55265531 is 13556255.

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

It is an interprime number because it is at equal distance from previous prime (55265519) and next prime (55265543).

It is a cyclic number.

It is not a de Polignac number, because 55265531 - 2²² = 51071227 is a prime.

It is a super-2 number, since 2×55265531² = 6108557833423922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55265131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 746795 + ... + 746868.

It is an arithmetic number, because the mean of its divisors is an integer number (14189808).

Almost surely, 2^55265531 is an apocalyptic number.

55265531 is a deficient number, since it is larger than the sum of its proper divisors (1493701).

55265531 is a wasteful number, since it uses less digits than its factorization.

55265531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1493700.

The product of its digits is 22500, while the sum is 32.

The square root of 55265531 is about 7434.0790283666. The cubic root of 55265531 is about 380.9062649015.

The spelling of 55265531 in words is "fifty-five million, two hundred sixty-five thousand, five hundred thirty-one".