51402756 has 24 divisors (see below), whose sum is σ = 120806560. Its totient is φ = 17010432.

The previous prime is 51402737. The next prime is 51402763. The reversal of 51402756 is 65720415.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13741 + ... + 17076.

Almost surely, 2^51402756 is an apocalyptic number.

It is an amenable number.

51402756 is an abundant number, since it is smaller than the sum of its proper divisors (69403804).

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

51402756 is a wasteful number, since it uses less digits than its factorization.

51402756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30963 (or 30961 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 30.

The square root of 51402756 is about 7169.5715353151. The cubic root of 51402756 is about 371.8166225337.

The spelling of 51402756 in words is "fifty-one million, four hundred two thousand, seven hundred fifty-six".