56507501 has 4 divisors (see below), whose sum is σ = 59481600. Its totient is φ = 53533404.

The previous prime is 56507497. The next prime is 56507519. The reversal of 56507501 is 10570565.

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 an emirpimes, since its reverse is a distinct semiprime: 10570565 = 5 ⋅2114113.

It is a cyclic number.

It is not a de Polignac number, because 56507501 - 2² = 56507497 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 (56507701) 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, 1487021 + ... + 1487058.

It is an arithmetic number, because the mean of its divisors is an integer number (14870400).

Almost surely, 2^56507501 is an apocalyptic number.

It is an amenable number.

56507501 is a deficient number, since it is larger than the sum of its proper divisors (2974099).

56507501 is a wasteful number, since it uses less digits than its factorization.

56507501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2974098.

The product of its (nonzero) digits is 5250, while the sum is 29.

The square root of 56507501 is about 7517.1471317249. The cubic root of 56507501 is about 383.7384942810.

The spelling of 56507501 in words is "fifty-six million, five hundred seven thousand, five hundred one".