55660251 has 16 divisors (see below), whose sum is σ = 76988160. Its totient is φ = 35726880.

The previous prime is 55660219. The next prime is 55660259. The reversal of 55660251 is 15206655.

It is not a de Polignac number, because 55660251 - 2⁵ = 55660219 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55660259) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42066 + ... + 43368.

It is an arithmetic number, because the mean of its divisors is an integer number (4811760).

Almost surely, 2^55660251 is an apocalyptic number.

55660251 is a deficient number, since it is larger than the sum of its proper divisors (21327909).

55660251 is a wasteful number, since it uses less digits than its factorization.

55660251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1826.

The product of its (nonzero) digits is 9000, while the sum is 30.

The square root of 55660251 is about 7460.5798032056. The cubic root of 55660251 is about 381.8109565062.

The spelling of 55660251 in words is "fifty-five million, six hundred sixty thousand, two hundred fifty-one".