51457277 has 2 divisors, whose sum is σ = 51457278. Its totient is φ = 51457276.

The previous prime is 51457271. The next prime is 51457297. The reversal of 51457277 is 77275415.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41654116 + 9803161 = 6454^2 + 3131^2 .

It is a cyclic number.

It is not a de Polignac number, because 51457277 - 2¹⁰ = 51456253 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51457277.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51457271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25728638 + 25728639.

It is an arithmetic number, because the mean of its divisors is an integer number (25728639).

Almost surely, 2^51457277 is an apocalyptic number.

It is an amenable number.

51457277 is a deficient number, since it is larger than the sum of its proper divisors (1).

51457277 is an equidigital number, since it uses as much as digits as its factorization.

51457277 is an evil number, because the sum of its binary digits is even.

The product of its digits is 68600, while the sum is 38.

The square root of 51457277 is about 7173.3727771530. The cubic root of 51457277 is about 371.9480334585.

The spelling of 51457277 in words is "fifty-one million, four hundred fifty-seven thousand, two hundred seventy-seven".