56642501 has 4 divisors (see below), whose sum is σ = 56658252. Its totient is φ = 56626752.

The previous prime is 56642497. The next prime is 56642503. The reversal of 56642501 is 10524665.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10524665 = 5 ⋅2104933.

It can be written as a sum of positive squares in 2 ways, for example, as 47969476 + 8673025 = 6926^2 + 2945^2 .

It is a cyclic number.

It is not a de Polignac number, because 56642501 - 2² = 56642497 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 (56642503) 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, 461 + ... + 10653.

It is an arithmetic number, because the mean of its divisors is an integer number (14164563).

Almost surely, 2^56642501 is an apocalyptic number.

It is an amenable number.

56642501 is a deficient number, since it is larger than the sum of its proper divisors (15751).

56642501 is a wasteful number, since it uses less digits than its factorization.

56642501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15750.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 56642501 is about 7526.1212453694. The cubic root of 56642501 is about 384.0438431024.

The spelling of 56642501 in words is "fifty-six million, six hundred forty-two thousand, five hundred one".