53012257 has 2 divisors, whose sum is σ = 53012258. Its totient is φ = 53012256.

The previous prime is 53012251. The next prime is 53012269. The reversal of 53012257 is 75221035.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40908816 + 12103441 = 6396^2 + 3479^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53012257 is a prime.

It is equal to p_3170725 and since 53012257 and 3170725 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (53012251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26506128 + 26506129.

It is an arithmetic number, because the mean of its divisors is an integer number (26506129).

Almost surely, 2^53012257 is an apocalyptic number.

It is an amenable number.

53012257 is a deficient number, since it is larger than the sum of its proper divisors (1).

53012257 is an equidigital number, since it uses as much as digits as its factorization.

53012257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2100, while the sum is 25.

The square root of 53012257 is about 7280.9516548319. The cubic root of 53012257 is about 375.6575296647.

It can be divided in two parts, 530 and 12257, that multiplied together give a triangular number (6496210 = T₃₆₀₄).

The spelling of 53012257 in words is "fifty-three million, twelve thousand, two hundred fifty-seven".