51512850 has 36 divisors (see below), whose sum is σ = 138399066. Its totient is φ = 13736640.

The previous prime is 51512849. The next prime is 51512869. The reversal of 51512850 is 5821515.

It can be written as a sum of positive squares in 3 ways, for example, as 44076321 + 7436529 = 6639^2 + 2727^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 56787 + ... + 57686.

Almost surely, 2^51512850 is an apocalyptic number.

51512850 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51512850 is an abundant number, since it is smaller than the sum of its proper divisors (86886216).

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

51512850 is a wasteful number, since it uses less digits than its factorization.

51512850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114491 (or 114483 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 27.

The square root of 51512850 is about 7177.2452932863. The cubic root of 51512850 is about 372.0818845064.

It can be divided in two parts, 5151 and 2850, that added together give a triangular number (8001 = T₁₂₆).

The spelling of 51512850 in words is "fifty-one million, five hundred twelve thousand, eight hundred fifty".