51065560 has 64 divisors (see below), whose sum is σ = 141422400. Its totient is φ = 16160256.

The previous prime is 51065533. The next prime is 51065579. The reversal of 51065560 is 6556015.

It is a super-2 number, since 2×51065560² = 5215382836227200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3375 + ... + 10654.

It is an arithmetic number, because the mean of its divisors is an integer number (2209725).

Almost surely, 2^51065560 is an apocalyptic number.

It is an amenable number.

51065560 is an abundant number, since it is smaller than the sum of its proper divisors (90356840).

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

51065560 is a wasteful number, since it uses less digits than its factorization.

51065560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14060 (or 14056 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 28.

The square root of 51065560 is about 7146.0170724677. The cubic root of 51065560 is about 371.0018138886.

The spelling of 51065560 in words is "fifty-one million, sixty-five thousand, five hundred sixty".