51900539 has 2 divisors, whose sum is σ = 51900540. Its totient is φ = 51900538.

The previous prime is 51900521. The next prime is 51900553. The reversal of 51900539 is 93500915.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51900539 is a prime.

It is not a weakly prime, because it can be changed into another prime (51900559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25950269 + 25950270.

It is an arithmetic number, because the mean of its divisors is an integer number (25950270).

Almost surely, 2^51900539 is an apocalyptic number.

51900539 is a deficient number, since it is larger than the sum of its proper divisors (1).

51900539 is an equidigital number, since it uses as much as digits as its factorization.

51900539 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6075, while the sum is 32.

The square root of 51900539 is about 7204.2028705472. The cubic root of 51900539 is about 373.0129898899.

The spelling of 51900539 in words is "fifty-one million, nine hundred thousand, five hundred thirty-nine".