55761513 has 8 divisors (see below), whose sum is σ = 78722208. Its totient is φ = 34987584.

The previous prime is 55761491. The next prime is 55761551. The reversal of 55761513 is 31516755.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-55761513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55760513) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 546631 + ... + 546732.

It is an arithmetic number, because the mean of its divisors is an integer number (9840276).

Almost surely, 2^55761513 is an apocalyptic number.

It is an amenable number.

55761513 is a deficient number, since it is larger than the sum of its proper divisors (22960695).

55761513 is a wasteful number, since it uses less digits than its factorization.

55761513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1093383.

The product of its digits is 15750, while the sum is 33.

The square root of 55761513 is about 7467.3631892389. The cubic root of 55761513 is about 382.0423575373.

The spelling of 55761513 in words is "fifty-five million, seven hundred sixty-one thousand, five hundred thirteen".