56145331 has 6 divisors (see below), whose sum is σ = 61713596. Its totient is φ = 51041100.

The previous prime is 56145329. The next prime is 56145347. The reversal of 56145331 is 13354165.

It is not a de Polignac number, because 56145331 - 2¹ = 56145329 is a prime.

It is a super-2 number, since 2×56145331² = 6304596386199122, 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 56145331.

It is not an unprimeable number, because it can be changed into a prime (56145731) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 231885 + ... + 232126.

Almost surely, 2^56145331 is an apocalyptic number.

56145331 is a deficient number, since it is larger than the sum of its proper divisors (5568265).

56145331 is a wasteful number, since it uses less digits than its factorization.

56145331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 464033 (or 464022 counting only the distinct ones).

The product of its digits is 5400, while the sum is 28.

The square root of 56145331 is about 7493.0188175394. The cubic root of 56145331 is about 382.9169128075.

Adding to 56145331 its reverse (13354165), we get a palindrome (69499496).

The spelling of 56145331 in words is "fifty-six million, one hundred forty-five thousand, three hundred thirty-one".