56942517 has 4 divisors (see below), whose sum is σ = 75923360. Its totient is φ = 37961676.

The previous prime is 56942477. The next prime is 56942533. The reversal of 56942517 is 71524965.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 56942517 - 2¹¹ = 56940469 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 (56942597) 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 in 3 ways as a sum of consecutive naturals, for example, 9490417 + ... + 9490422.

It is an arithmetic number, because the mean of its divisors is an integer number (18980840).

Almost surely, 2^56942517 is an apocalyptic number.

It is an amenable number.

56942517 is a deficient number, since it is larger than the sum of its proper divisors (18980843).

56942517 is a wasteful number, since it uses less digits than its factorization.

56942517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18980842.

The product of its digits is 75600, while the sum is 39.

The square root of 56942517 is about 7546.0265703216. The cubic root of 56942517 is about 384.7206992106.

The spelling of 56942517 in words is "fifty-six million, nine hundred forty-two thousand, five hundred seventeen".