51957427 has 2 divisors, whose sum is σ = 51957428. Its totient is φ = 51957426.

The previous prime is 51957413. The next prime is 51957449. The reversal of 51957427 is 72475915.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51957427 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51957427.

It is not a weakly prime, because it can be changed into another prime (51957407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25978713 + 25978714.

It is an arithmetic number, because the mean of its divisors is an integer number (25978714).

Almost surely, 2^51957427 is an apocalyptic number.

51957427 is a deficient number, since it is larger than the sum of its proper divisors (1).

51957427 is an equidigital number, since it uses as much as digits as its factorization.

51957427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 88200, while the sum is 40.

The square root of 51957427 is about 7208.1500400588. The cubic root of 51957427 is about 373.1492262056.

The spelling of 51957427 in words is "fifty-one million, nine hundred fifty-seven thousand, four hundred twenty-seven".