51149560 has 64 divisors (see below), whose sum is σ = 143493120. Its totient is φ = 15941760.

The previous prime is 51149557. The next prime is 51149561. The reversal of 51149560 is 6594115.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51149561) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5224 + ... + 11383.

It is an arithmetic number, because the mean of its divisors is an integer number (2242080).

Almost surely, 2^51149560 is an apocalyptic number.

It is an amenable number.

51149560 is an abundant number, since it is smaller than the sum of its proper divisors (92343560).

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

51149560 is a wasteful number, since it uses less digits than its factorization.

51149560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16636 (or 16632 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 31.

The square root of 51149560 is about 7151.8920573510. The cubic root of 51149560 is about 371.2051282176.

The spelling of 51149560 in words is "fifty-one million, one hundred forty-nine thousand, five hundred sixty".