51871756 has 24 divisors (see below), whose sum is σ = 92456784. Its totient is φ = 25459200.

The previous prime is 51871751. The next prime is 51871759. The reversal of 51871756 is 65717815.

It is not an unprimeable number, because it can be changed into a prime (51871751) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116871 + ... + 117313.

It is an arithmetic number, because the mean of its divisors is an integer number (3852366).

Almost surely, 2^51871756 is an apocalyptic number.

It is an amenable number.

51871756 is a deficient number, since it is larger than the sum of its proper divisors (40585028).

51871756 is a wasteful number, since it uses less digits than its factorization.

51871756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 921 (or 919 counting only the distinct ones).

The product of its digits is 58800, while the sum is 40.

The square root of 51871756 is about 7202.2049401555. The cubic root of 51871756 is about 372.9440219598.

The spelling of 51871756 in words is "fifty-one million, eight hundred seventy-one thousand, seven hundred fifty-six".