51431148 has 36 divisors (see below), whose sum is σ = 130224640. Its totient is φ = 17114976.

The previous prime is 51431131. The next prime is 51431153. The reversal of 51431148 is 84113415.

It is a happy number.

51431148 is a `hidden beast` number, since 514 + 3 + 1 + 148 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39573 + ... + 40851.

Almost surely, 2^51431148 is an apocalyptic number.

It is an amenable number.

51431148 is an abundant number, since it is smaller than the sum of its proper divisors (78793492).

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

51431148 is a wasteful number, since it uses less digits than its factorization.

51431148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2406 (or 2401 counting only the distinct ones).

The product of its digits is 1920, while the sum is 27.

The square root of 51431148 is about 7171.5512966164. The cubic root of 51431148 is about 371.8850668178.

The spelling of 51431148 in words is "fifty-one million, four hundred thirty-one thousand, one hundred forty-eight".