51700537 has 6 divisors (see below), whose sum is σ = 60141498. Its totient is φ = 44314704.

The previous prime is 51700487. The next prime is 51700547. The reversal of 51700537 is 73500715.

51700537 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 31125241 + 20575296 = 5579^2 + 4536^2 .

It is not a de Polignac number, because 51700537 - 2⁷ = 51700409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51700547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 527508 + ... + 527605.

It is an arithmetic number, because the mean of its divisors is an integer number (10023583).

Almost surely, 2^51700537 is an apocalyptic number.

It is an amenable number.

51700537 is a deficient number, since it is larger than the sum of its proper divisors (8440961).

51700537 is a wasteful number, since it uses less digits than its factorization.

51700537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1055127 (or 1055120 counting only the distinct ones).

The product of its (nonzero) digits is 3675, while the sum is 28.

The square root of 51700537 is about 7190.3085469262. The cubic root of 51700537 is about 372.5332300731.

The spelling of 51700537 in words is "fifty-one million, seven hundred thousand, five hundred thirty-seven".