55261685 has 16 divisors (see below), whose sum is σ = 69335040. Its totient is φ = 42232320.

The previous prime is 55261651. The next prime is 55261691. The reversal of 55261685 is 58616255.

It is not a de Polignac number, because 55261685 - 2⁸ = 55261429 is a prime.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9989 + ... + 14501.

It is an arithmetic number, because the mean of its divisors is an integer number (4333440).

Almost surely, 2^55261685 is an apocalyptic number.

It is an amenable number.

55261685 is a deficient number, since it is larger than the sum of its proper divisors (14073355).

55261685 is a wasteful number, since it uses less digits than its factorization.

55261685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4628.

The product of its digits is 72000, while the sum is 38.

The square root of 55261685 is about 7433.8203502641. The cubic root of 55261685 is about 380.8974287762.

The spelling of 55261685 in words is "fifty-five million, two hundred sixty-one thousand, six hundred eighty-five".