51393137 has 8 divisors (see below), whose sum is σ = 53229312. Its totient is φ = 49588000.

The previous prime is 51393113. The next prime is 51393161. The reversal of 51393137 is 73139315.

It is an interprime number because it is at equal distance from previous prime (51393113) and next prime (51393161).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51393137 - 2⁶ = 51393073 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (51393107) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4364 + ... + 11037.

It is an arithmetic number, because the mean of its divisors is an integer number (6653664).

Almost surely, 2^51393137 is an apocalyptic number.

It is an amenable number.

51393137 is a deficient number, since it is larger than the sum of its proper divisors (1836175).

51393137 is a wasteful number, since it uses less digits than its factorization.

51393137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15519.

The product of its digits is 8505, while the sum is 32.

The square root of 51393137 is about 7168.9006828104. The cubic root of 51393137 is about 371.7934283999.

The spelling of 51393137 in words is "fifty-one million, three hundred ninety-three thousand, one hundred thirty-seven".