51327975 has 12 divisors (see below), whose sum is σ = 84862376. Its totient is φ = 27374880.

The previous prime is 51327961. The next prime is 51327989. The reversal of 51327975 is 57972315.

It is an interprime number because it is at equal distance from previous prime (51327961) and next prime (51327989).

It is not a de Polignac number, because 51327975 - 2⁸ = 51327719 is a prime.

It is a super-2 number, since 2×51327975² = 5269122035201250, which contains 22 as substring.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a congruent number.

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, 342112 + ... + 342261.

Almost surely, 2^51327975 is an apocalyptic number.

51327975 is a deficient number, since it is larger than the sum of its proper divisors (33534401).

51327975 is a wasteful number, since it uses less digits than its factorization.

51327975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 684386 (or 684381 counting only the distinct ones).

The product of its digits is 66150, while the sum is 39.

The square root of 51327975 is about 7164.3544719675. The cubic root of 51327975 is about 371.6362280993.

It can be divided in two parts, 513279 and 75, that multiplied together give a triangular number (38495925 = T₈₇₇₄).

The spelling of 51327975 in words is "fifty-one million, three hundred twenty-seven thousand, nine hundred seventy-five".