51151516 has 24 divisors (see below), whose sum is σ = 96596640. Its totient is φ = 23560512.

The previous prime is 51151493. The next prime is 51151523. The reversal of 51151516 is 61515115.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45570 + ... + 46678.

It is an arithmetic number, because the mean of its divisors is an integer number (4024860).

Almost surely, 2^51151516 is an apocalyptic number.

It is an amenable number.

51151516 is a deficient number, since it is larger than the sum of its proper divisors (45445124).

51151516 is a wasteful number, since it uses less digits than its factorization.

51151516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2013 (or 2011 counting only the distinct ones).

The product of its digits is 750, while the sum is 25.

The square root of 51151516 is about 7152.0288030740. The cubic root of 51151516 is about 371.2098598841.

The spelling of 51151516 in words is "fifty-one million, one hundred fifty-one thousand, five hundred sixteen".