56273513 has 4 divisors (see below), whose sum is σ = 56384580. Its totient is φ = 56162448.

The previous prime is 56273509. The next prime is 56273561. The reversal of 56273513 is 31537265.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31537265 = 5 ⋅6307453.

It can be written as a sum of positive squares in 2 ways, for example, as 22202944 + 34070569 = 4712^2 + 5837^2 .

It is a cyclic number.

It is not a de Polignac number, because 56273513 - 2² = 56273509 is a prime.

It is a super-2 number, since 2×56273513² = 6333416530722338, 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 56273513.

It is not an unprimeable number, because it can be changed into a prime (56273563) 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, 54770 + ... + 55787.

It is an arithmetic number, because the mean of its divisors is an integer number (14096145).

Almost surely, 2^56273513 is an apocalyptic number.

It is an amenable number.

56273513 is a deficient number, since it is larger than the sum of its proper divisors (111067).

56273513 is a wasteful number, since it uses less digits than its factorization.

56273513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111066.

The product of its digits is 18900, while the sum is 32.

The square root of 56273513 is about 7501.5673695568. The cubic root of 56273513 is about 383.2080961188.

The spelling of 56273513 in words is "fifty-six million, two hundred seventy-three thousand, five hundred thirteen".