55899261 has 32 divisors (see below), whose sum is σ = 91238400. Its totient is φ = 33542640.

The previous prime is 55899253. The next prime is 55899301. The reversal of 55899261 is 16299855.

55899261 is a `hidden beast` number, since 5 + 589 + 9 + 2 + 61 = 666.

It is not a de Polignac number, because 55899261 - 2³ = 55899253 is a prime.

It is a super-2 number, since 2×55899261² = 6249454760692242, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55899251) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30900 + ... + 32658.

It is an arithmetic number, because the mean of its divisors is an integer number (2851200).

Almost surely, 2^55899261 is an apocalyptic number.

It is an amenable number.

55899261 is a deficient number, since it is larger than the sum of its proper divisors (35339139).

55899261 is a wasteful number, since it uses less digits than its factorization.

55899261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1886 (or 1880 counting only the distinct ones).

The product of its digits is 194400, while the sum is 45.

The square root of 55899261 is about 7476.5808361844. The cubic root of 55899261 is about 382.3566860257.

The spelling of 55899261 in words is "fifty-five million, eight hundred ninety-nine thousand, two hundred sixty-one".