56551142 has 4 divisors (see below), whose sum is σ = 84826716. Its totient is φ = 28275570.

The previous prime is 56551141. The next prime is 56551151. The reversal of 56551142 is 24115565.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56551141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14137784 + ... + 14137787.

It is an arithmetic number, because the mean of its divisors is an integer number (21206679).

Almost surely, 2^56551142 is an apocalyptic number.

56551142 is a deficient number, since it is larger than the sum of its proper divisors (28275574).

56551142 is a wasteful number, since it uses less digits than its factorization.

56551142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28275573.

The product of its digits is 6000, while the sum is 29.

The square root of 56551142 is about 7520.0493349446. The cubic root of 56551142 is about 383.8372565219.

The spelling of 56551142 in words is "fifty-six million, five hundred fifty-one thousand, one hundred forty-two".