51457271 has 2 divisors, whose sum is σ = 51457272. Its totient is φ = 51457270.

The previous prime is 51457247. The next prime is 51457277. The reversal of 51457271 is 17275415.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51457271 - 2⁶ = 51457207 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51457277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25728635 + 25728636.

It is an arithmetic number, because the mean of its divisors is an integer number (25728636).

Almost surely, 2^51457271 is an apocalyptic number.

51457271 is a deficient number, since it is larger than the sum of its proper divisors (1).

51457271 is an equidigital number, since it uses as much as digits as its factorization.

51457271 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9800, while the sum is 32.

The square root of 51457271 is about 7173.3723589397. The cubic root of 51457271 is about 371.9480190019.

The spelling of 51457271 in words is "fifty-one million, four hundred fifty-seven thousand, two hundred seventy-one".