56939145 has 16 divisors (see below), whose sum is σ = 95064192. Its totient is φ = 29047040.

The previous prime is 56939131. The next prime is 56939147. The reversal of 56939145 is 54193965.

It is not a de Polignac number, because 56939145 - 2⁹ = 56938633 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 56939097 and 56939106.

It is not an unprimeable number, because it can be changed into a prime (56939147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82176 + ... + 82865.

It is an arithmetic number, because the mean of its divisors is an integer number (5941512).

Almost surely, 2^56939145 is an apocalyptic number.

It is an amenable number.

56939145 is a deficient number, since it is larger than the sum of its proper divisors (38125047).

56939145 is a wasteful number, since it uses less digits than its factorization.

56939145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165072.

The product of its digits is 145800, while the sum is 42.

The square root of 56939145 is about 7545.8031381689. The cubic root of 56939145 is about 384.7131049801.

The spelling of 56939145 in words is "fifty-six million, nine hundred thirty-nine thousand, one hundred forty-five".