51616115 has 4 divisors (see below), whose sum is σ = 61939344. Its totient is φ = 41292888.

The previous prime is 51616093. The next prime is 51616139. The reversal of 51616115 is 51161615.

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

It is a cyclic number.

It is not a de Polignac number, because 51616115 - 2¹⁸ = 51353971 is a prime.

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, 5161607 + ... + 5161616.

It is an arithmetic number, because the mean of its divisors is an integer number (15484836).

Almost surely, 2^51616115 is an apocalyptic number.

51616115 is a deficient number, since it is larger than the sum of its proper divisors (10323229).

51616115 is a wasteful number, since it uses less digits than its factorization.

51616115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10323228.

The product of its digits is 900, while the sum is 26.

The square root of 51616115 is about 7184.4356076173. The cubic root of 51616115 is about 372.3303493037.

The spelling of 51616115 in words is "fifty-one million, six hundred sixteen thousand, one hundred fifteen".