55526891 has 8 divisors (see below), whose sum is σ = 63512064. Its totient is φ = 47554920.

The previous prime is 55526869. The next prime is 55526893. The reversal of 55526891 is 19862555.

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

It is not a de Polignac number, because 55526891 - 2⁶ = 55526827 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55526893) 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, 8576 + ... + 13586.

It is an arithmetic number, because the mean of its divisors is an integer number (7939008).

Almost surely, 2^55526891 is an apocalyptic number.

55526891 is a deficient number, since it is larger than the sum of its proper divisors (7985173).

55526891 is a wasteful number, since it uses less digits than its factorization.

55526891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6601.

The product of its digits is 108000, while the sum is 41.

The square root of 55526891 is about 7451.6368000594. The cubic root of 55526891 is about 381.5057774445.

The spelling of 55526891 in words is "fifty-five million, five hundred twenty-six thousand, eight hundred ninety-one".