56243015 has 4 divisors (see below), whose sum is σ = 67491624. Its totient is φ = 44994408.

The previous prime is 56243009. The next prime is 56243029. The reversal of 56243015 is 51034265.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 51034265 = 5 ⋅10206853.

It is a cyclic number.

It is not a de Polignac number, because 56243015 - 2⁴ = 56242999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5624297 + ... + 5624306.

It is an arithmetic number, because the mean of its divisors is an integer number (16872906).

Almost surely, 2^56243015 is an apocalyptic number.

56243015 is a deficient number, since it is larger than the sum of its proper divisors (11248609).

56243015 is a wasteful number, since it uses less digits than its factorization.

56243015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11248608.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 56243015 is about 7499.5343188761. The cubic root of 56243015 is about 383.1388557732.

The spelling of 56243015 in words is "fifty-six million, two hundred forty-three thousand, fifteen".