51078537 has 24 divisors (see below), whose sum is σ = 76334856. Its totient is φ = 32887296.

The previous prime is 51078529. The next prime is 51078553. The reversal of 51078537 is 73587015.

51078537 is a `hidden beast` number, since 51 + 0 + 78 + 537 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 25160256 + 25918281 = 5016^2 + 5091^2 .

It is not a de Polignac number, because 51078537 - 2³ = 51078529 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51078037) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 51793 + ... + 52769.

It is an arithmetic number, because the mean of its divisors is an integer number (3180619).

Almost surely, 2^51078537 is an apocalyptic number.

It is an amenable number.

51078537 is a deficient number, since it is larger than the sum of its proper divisors (25256319).

51078537 is a wasteful number, since it uses less digits than its factorization.

51078537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1177 (or 1174 counting only the distinct ones).

The product of its (nonzero) digits is 29400, while the sum is 36.

The square root of 51078537 is about 7146.9250031045. The cubic root of 51078537 is about 371.0332380864.

It can be divided in two parts, 51078 and 537, that added together give a palindrome (51615).

The spelling of 51078537 in words is "fifty-one million, seventy-eight thousand, five hundred thirty-seven".