56534393 has 4 divisors (see below), whose sum is σ = 56552820. Its totient is φ = 56515968.

The previous prime is 56534363. The next prime is 56534407. The reversal of 56534393 is 39343565.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 39343565 = 5 ⋅7868713.

It can be written as a sum of positive squares in 2 ways, for example, as 27071209 + 29463184 = 5203^2 + 5428^2 .

It is a cyclic number.

It is not a de Polignac number, because 56534393 - 2¹⁴ = 56518009 is a prime.

It is a super-2 number, since 2×56534393² = 6392275183756898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56534323) 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, 3380 + ... + 11157.

It is an arithmetic number, because the mean of its divisors is an integer number (14138205).

Almost surely, 2^56534393 is an apocalyptic number.

It is an amenable number.

56534393 is a deficient number, since it is larger than the sum of its proper divisors (18427).

56534393 is a wasteful number, since it uses less digits than its factorization.

56534393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18426.

The product of its digits is 145800, while the sum is 38.

The square root of 56534393 is about 7518.9356294625. The cubic root of 56534393 is about 383.7993585251.

The spelling of 56534393 in words is "fifty-six million, five hundred thirty-four thousand, three hundred ninety-three".