51276870 has 48 divisors (see below), whose sum is σ = 134568720. Its totient is φ = 13545792.

The previous prime is 51276853. The next prime is 51276893. The reversal of 51276870 is 7867215.

51276870 is a `hidden beast` number, since 512 + 76 + 8 + 70 = 666.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7197 + ... + 12423.

It is an arithmetic number, because the mean of its divisors is an integer number (2803515).

Almost surely, 2^51276870 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51276870, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67284360).

51276870 is an abundant number, since it is smaller than the sum of its proper divisors (83291850).

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

51276870 is a wasteful number, since it uses less digits than its factorization.

51276870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5349 (or 5346 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 36.

The square root of 51276870 is about 7160.7869679247. The cubic root of 51276870 is about 371.5128465434.

The spelling of 51276870 in words is "fifty-one million, two hundred seventy-six thousand, eight hundred seventy".