55911285 has 24 divisors (see below), whose sum is σ = 97919640. Its totient is φ = 29509632.

The previous prime is 55911253. The next prime is 55911301. The reversal of 55911285 is 58211955.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2241009 + 53670276 = 1497^2 + 7326^2 .

It is not a de Polignac number, because 55911285 - 2⁵ = 55911253 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2040 + ... + 10769.

It is an arithmetic number, because the mean of its divisors is an integer number (4079985).

Almost surely, 2^55911285 is an apocalyptic number.

It is an amenable number.

55911285 is a deficient number, since it is larger than the sum of its proper divisors (42008355).

55911285 is a wasteful number, since it uses less digits than its factorization.

55911285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12917 (or 12914 counting only the distinct ones).

The product of its digits is 18000, while the sum is 36.

The square root of 55911285 is about 7477.3849038283. The cubic root of 55911285 is about 382.3840991919.

The spelling of 55911285 in words is "fifty-five million, nine hundred eleven thousand, two hundred eighty-five".