51247037 has 4 divisors (see below), whose sum is σ = 51561600. Its totient is φ = 50932476.

The previous prime is 51247003. The next prime is 51247051. The reversal of 51247037 is 73074215.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 51247037 - 2¹⁸ = 50984893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51247057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 157037 + ... + 157362.

It is an arithmetic number, because the mean of its divisors is an integer number (12890400).

Almost surely, 2^51247037 is an apocalyptic number.

It is an amenable number.

51247037 is a deficient number, since it is larger than the sum of its proper divisors (314563).

51247037 is a wasteful number, since it uses less digits than its factorization.

51247037 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314562.

The product of its (nonzero) digits is 5880, while the sum is 29.

The square root of 51247037 is about 7158.7035837503. The cubic root of 51247037 is about 371.4407835587.

The spelling of 51247037 in words is "fifty-one million, two hundred forty-seven thousand, thirty-seven".