51162715 has 4 divisors (see below), whose sum is σ = 61395264. Its totient is φ = 40930168.

The previous prime is 51162677. The next prime is 51162719. The reversal of 51162715 is 51726115.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51162715 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51162719) 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, 5116267 + ... + 5116276.

It is an arithmetic number, because the mean of its divisors is an integer number (15348816).

Almost surely, 2^51162715 is an apocalyptic number.

51162715 is a deficient number, since it is larger than the sum of its proper divisors (10232549).

51162715 is a wasteful number, since it uses less digits than its factorization.

51162715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10232548.

The product of its digits is 2100, while the sum is 28.

The square root of 51162715 is about 7152.8116849250. The cubic root of 51162715 is about 371.2369485298.

The spelling of 51162715 in words is "fifty-one million, one hundred sixty-two thousand, seven hundred fifteen".