56523331 has 4 divisors (see below), whose sum is σ = 56816392. Its totient is φ = 56230272.

The previous prime is 56523329. The next prime is 56523343. The reversal of 56523331 is 13332565.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13332565 = 5 ⋅2666513.

It is a cyclic number.

It is not a de Polignac number, because 56523331 - 2¹ = 56523329 is a prime.

It is a super-2 number, since 2×56523331² = 6389773894671122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 56523331.

It is not an unprimeable number, because it can be changed into a prime (56521331) 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, 146241 + ... + 146626.

It is an arithmetic number, because the mean of its divisors is an integer number (14204098).

Almost surely, 2^56523331 is an apocalyptic number.

56523331 is a deficient number, since it is larger than the sum of its proper divisors (293061).

56523331 is a wasteful number, since it uses less digits than its factorization.

56523331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293060.

The product of its digits is 8100, while the sum is 28.

The square root of 56523331 is about 7518.1999840387. The cubic root of 56523331 is about 383.7743244103.

Adding to 56523331 its reverse (13332565), we get a palindrome (69855896).

The spelling of 56523331 in words is "fifty-six million, five hundred twenty-three thousand, three hundred thirty-one".