51512377 has 12 divisors (see below), whose sum is σ = 60747636. Its totient is φ = 43545600.

The previous prime is 51512371. The next prime is 51512389. The reversal of 51512377 is 77321515.

It can be written as a sum of positive squares in 2 ways, for example, as 44876601 + 6635776 = 6699^2 + 2576^2 .

It is not a de Polignac number, because 51512377 - 2¹⁵ = 51479609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51512371) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3624 + ... + 10777.

It is an arithmetic number, because the mean of its divisors is an integer number (5062303).

Almost surely, 2^51512377 is an apocalyptic number.

It is an amenable number.

51512377 is a deficient number, since it is larger than the sum of its proper divisors (9235259).

51512377 is a wasteful number, since it uses less digits than its factorization.

51512377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14488 (or 14481 counting only the distinct ones).

The product of its digits is 7350, while the sum is 31.

The square root of 51512377 is about 7177.2123418497. The cubic root of 51512377 is about 372.0807456626.

The spelling of 51512377 in words is "fifty-one million, five hundred twelve thousand, three hundred seventy-seven".