55611647 has 24 divisors (see below), whose sum is σ = 71238240. Its totient is φ = 42456960.

The previous prime is 55611643. The next prime is 55611653. The reversal of 55611647 is 74611655.

It is not a de Polignac number, because 55611647 - 2² = 55611643 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55611643) 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, 33497 + ... + 35117.

It is an arithmetic number, because the mean of its divisors is an integer number (2968260).

Almost surely, 2^55611647 is an apocalyptic number.

55611647 is a deficient number, since it is larger than the sum of its proper divisors (15626593).

55611647 is a wasteful number, since it uses less digits than its factorization.

55611647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1683 (or 1670 counting only the distinct ones).

The product of its digits is 25200, while the sum is 35.

The square root of 55611647 is about 7457.3217042045. The cubic root of 55611647 is about 381.6997883407.

The spelling of 55611647 in words is "fifty-five million, six hundred eleven thousand, six hundred forty-seven".