55485261 has 24 divisors (see below), whose sum is σ = 87218040. Its totient is φ = 33785856.

The previous prime is 55485233. The next prime is 55485277. The reversal of 55485261 is 16258455.

55485261 is a `hidden beast` number, since 5 + 548 + 52 + 61 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 4076361 + 51408900 = 2019^2 + 7170^2 .

It is not a de Polignac number, because 55485261 - 2¹⁴ = 55468877 is a prime.

It is a super-2 number, since 2×55485261² = 6157228376476242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55485211) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8905 + ... + 13793.

It is an arithmetic number, because the mean of its divisors is an integer number (3634085).

Almost surely, 2^55485261 is an apocalyptic number.

It is an amenable number.

55485261 is a deficient number, since it is larger than the sum of its proper divisors (31732779).

55485261 is a wasteful number, since it uses less digits than its factorization.

55485261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5005 (or 5002 counting only the distinct ones).

The product of its digits is 48000, while the sum is 36.

The square root of 55485261 is about 7448.8429302812. The cubic root of 55485261 is about 381.4104119020.

The spelling of 55485261 in words is "fifty-five million, four hundred eighty-five thousand, two hundred sixty-one".