51516348 has 24 divisors (see below), whose sum is σ = 129451728. Its totient is φ = 15851136.

The previous prime is 51516331. The next prime is 51516349. The reversal of 51516348 is 84361515.

It is a super-2 number, since 2×51516348² = 5307868222514208, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51516349) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 164961 + ... + 165272.

It is an arithmetic number, because the mean of its divisors is an integer number (5393822).

Almost surely, 2^51516348 is an apocalyptic number.

It is an amenable number.

51516348 is an abundant number, since it is smaller than the sum of its proper divisors (77935380).

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

51516348 is a wasteful number, since it uses less digits than its factorization.

51516348 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330253 (or 330251 counting only the distinct ones).

The product of its digits is 14400, while the sum is 33.

The square root of 51516348 is about 7177.4889759581. The cubic root of 51516348 is about 372.0903064372.

The spelling of 51516348 in words is "fifty-one million, five hundred sixteen thousand, three hundred forty-eight".