51530316 has 24 divisors (see below), whose sum is σ = 120353520. Its totient is φ = 17160192.

The previous prime is 51530293. The next prime is 51530321. The reversal of 51530316 is 61303515.

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, 23140 + ... + 25268.

It is an arithmetic number, because the mean of its divisors is an integer number (5014730).

Almost surely, 2^51530316 is an apocalyptic number.

It is an amenable number.

51530316 is an abundant number, since it is smaller than the sum of its proper divisors (68823204).

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

51530316 is a wasteful number, since it uses less digits than its factorization.

51530316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4153 (or 4151 counting only the distinct ones).

The product of its (nonzero) digits is 1350, while the sum is 24.

The square root of 51530316 is about 7178.4619522569. The cubic root of 51530316 is about 372.1239325768.

The spelling of 51530316 in words is "fifty-one million, five hundred thirty thousand, three hundred sixteen".