51246560 has 24 divisors (see below), whose sum is σ = 121070376. Its totient is φ = 20498560.

The previous prime is 51246557. The next prime is 51246563. The reversal of 51246560 is 6564215.

It is an interprime number because it is at equal distance from previous prime (51246557) and next prime (51246563).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51246563) 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, 159986 + ... + 160305.

It is an arithmetic number, because the mean of its divisors is an integer number (5044599).

Almost surely, 2^51246560 is an apocalyptic number.

It is an amenable number.

51246560 is an abundant number, since it is smaller than the sum of its proper divisors (69823816).

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

51246560 is a wasteful number, since it uses less digits than its factorization.

51246560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320306 (or 320298 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 51246560 is about 7158.6702675846. The cubic root of 51246560 is about 371.4396311162.

The spelling of 51246560 in words is "fifty-one million, two hundred forty-six thousand, five hundred sixty".