51158616 has 16 divisors (see below), whose sum is σ = 127896600. Its totient is φ = 17052864.

The previous prime is 51158599. The next prime is 51158617. The reversal of 51158616 is 61685115.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51158617) 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, 1065781 + ... + 1065828.

Almost surely, 2^51158616 is an apocalyptic number.

It is an amenable number.

51158616 is an abundant number, since it is smaller than the sum of its proper divisors (76737984).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51158616 is a wasteful number, since it uses less digits than its factorization.

51158616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2131618 (or 2131614 counting only the distinct ones).

The product of its digits is 7200, while the sum is 33.

The square root of 51158616 is about 7152.5251485052. The cubic root of 51158616 is about 371.2270341426.

It can be divided in two parts, 5115 and 8616, that added together give a palindrome (13731).

The spelling of 51158616 in words is "fifty-one million, one hundred fifty-eight thousand, six hundred sixteen".