55642156 has 24 divisors (see below), whose sum is σ = 105053760. Its totient is φ = 25688832.

The previous prime is 55642109. The next prime is 55642159. The reversal of 55642156 is 65124655.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is not an unprimeable number, because it can be changed into a prime (55642159) 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, 4116 + ... + 11323.

It is an arithmetic number, because the mean of its divisors is an integer number (4377240).

Almost surely, 2^55642156 is an apocalyptic number.

It is an amenable number.

55642156 is a deficient number, since it is larger than the sum of its proper divisors (49411604).

55642156 is a wasteful number, since it uses less digits than its factorization.

55642156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15513 (or 15511 counting only the distinct ones).

The product of its digits is 36000, while the sum is 34.

The square root of 55642156 is about 7459.3669972726. The cubic root of 55642156 is about 381.7695767786.

The spelling of 55642156 in words is "fifty-five million, six hundred forty-two thousand, one hundred fifty-six".