51162115 has 4 divisors (see below), whose sum is σ = 61394544. Its totient is φ = 40929688.

The previous prime is 51162109. The next prime is 51162151. The reversal of 51162115 is 51126115.

It is a happy number.

51162115 is nontrivially palindromic in base 16.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 51126115 = 5 ⋅10225223.

It is a cyclic number.

It is not a de Polignac number, because 51162115 - 2³ = 51162107 is a prime.

It is a super-2 number, since 2×51162115² = 5235124022546450, which contains 22 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5116207 + ... + 5116216.

It is an arithmetic number, because the mean of its divisors is an integer number (15348636).

Almost surely, 2^51162115 is an apocalyptic number.

51162115 is a deficient number, since it is larger than the sum of its proper divisors (10232429).

51162115 is a wasteful number, since it uses less digits than its factorization.

51162115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10232428.

The product of its digits is 300, while the sum is 22.

The square root of 51162115 is about 7152.7697432533. The cubic root of 51162115 is about 371.2354973230.

It can be divided in two parts, 511 and 62115, that added together give a palindrome (62626).

The spelling of 51162115 in words is "fifty-one million, one hundred sixty-two thousand, one hundred fifteen".