56517137 has 4 divisors (see below), whose sum is σ = 56532336. Its totient is φ = 56501940.

The previous prime is 56517121. The next prime is 56517157. The reversal of 56517137 is 73171565.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 56517137 - 2⁴ = 56517121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56517097 and 56517106.

It is not an unprimeable number, because it can be changed into a prime (56517157) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2138 + ... + 10844.

It is an arithmetic number, because the mean of its divisors is an integer number (14133084).

Almost surely, 2^56517137 is an apocalyptic number.

It is an amenable number.

56517137 is a deficient number, since it is larger than the sum of its proper divisors (15199).

56517137 is an equidigital number, since it uses as much as digits as its factorization.

56517137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15198.

The product of its digits is 22050, while the sum is 35.

The square root of 56517137 is about 7517.7880390445. The cubic root of 56517137 is about 383.7603055090.

The spelling of 56517137 in words is "fifty-six million, five hundred seventeen thousand, one hundred thirty-seven".