51856275 has 36 divisors (see below), whose sum is σ = 87878552. Its totient is φ = 26981760.

The previous prime is 51856271. The next prime is 51856279. The reversal of 51856275 is 57265815.

51856275 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (51856271) and next prime (51856279).

It is not a de Polignac number, because 51856275 - 2² = 51856271 is a prime.

It is a Duffinian number.

Its product of digits (84000) is a multiple of the sum of its prime factors (420).

It is not an unprimeable number, because it can be changed into a prime (51856271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 165519 + ... + 165831.

Almost surely, 2^51856275 is an apocalyptic number.

51856275 is a deficient number, since it is larger than the sum of its proper divisors (36022277).

51856275 is a wasteful number, since it uses less digits than its factorization.

51856275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420 (or 368 counting only the distinct ones).

The product of its digits is 84000, while the sum is 39.

The square root of 51856275 is about 7201.1301196409. The cubic root of 51856275 is about 372.9069168548.

The spelling of 51856275 in words is "fifty-one million, eight hundred fifty-six thousand, two hundred seventy-five".