55617651 has 8 divisors (see below), whose sum is σ = 82396560. Its totient is φ = 37078416.

The previous prime is 55617649. The next prime is 55617671. The reversal of 55617651 is 15671655.

It is not a de Polignac number, because 55617651 - 2¹ = 55617649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55617671) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1029930 + ... + 1029983.

It is an arithmetic number, because the mean of its divisors is an integer number (10299570).

Almost surely, 2^55617651 is an apocalyptic number.

55617651 is a deficient number, since it is larger than the sum of its proper divisors (26778909).

55617651 is a wasteful number, since it uses less digits than its factorization.

55617651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2059922 (or 2059916 counting only the distinct ones).

The product of its digits is 31500, while the sum is 36.

The square root of 55617651 is about 7457.7242507349. The cubic root of 55617651 is about 381.7135243305.

The spelling of 55617651 in words is "fifty-five million, six hundred seventeen thousand, six hundred fifty-one".