51430937 has 4 divisors (see below), whose sum is σ = 51456720. Its totient is φ = 51405156.

The previous prime is 51430919. The next prime is 51430943. The reversal of 51430937 is 73903415.

It is a happy number.

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 51430937 - 2¹² = 51426841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51430237) 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, 9623 + ... + 13980.

It is an arithmetic number, because the mean of its divisors is an integer number (12864180).

Almost surely, 2^51430937 is an apocalyptic number.

It is an amenable number.

51430937 is a deficient number, since it is larger than the sum of its proper divisors (25783).

51430937 is a wasteful number, since it uses less digits than its factorization.

51430937 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25782.

The product of its (nonzero) digits is 11340, while the sum is 32.

The square root of 51430937 is about 7171.5365856977. The cubic root of 51430937 is about 371.8845582554.

The spelling of 51430937 in words is "fifty-one million, four hundred thirty thousand, nine hundred thirty-seven".