56138534 has 4 divisors (see below), whose sum is σ = 84207804. Its totient is φ = 28069266.

The previous prime is 56138531. The next prime is 56138543. The reversal of 56138534 is 43583165.

56138534 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a junction number, because it is equal to n+sod(n) for n = 56138494 and 56138503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56138531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14034632 + ... + 14034635.

It is an arithmetic number, because the mean of its divisors is an integer number (21051951).

Almost surely, 2^56138534 is an apocalyptic number.

56138534 is a deficient number, since it is larger than the sum of its proper divisors (28069270).

56138534 is a wasteful number, since it uses less digits than its factorization.

56138534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28069269.

The product of its digits is 43200, while the sum is 35.

The square root of 56138534 is about 7492.5652482978. The cubic root of 56138534 is about 382.9014601050.

The spelling of 56138534 in words is "fifty-six million, one hundred thirty-eight thousand, five hundred thirty-four".