53567257 has 2 divisors, whose sum is σ = 53567258. Its totient is φ = 53567256.

The previous prime is 53567249. The next prime is 53567329. The reversal of 53567257 is 75276535.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36228361 + 17338896 = 6019^2 + 4164^2 .

It is a cyclic number.

It is not a de Polignac number, because 53567257 - 2³ = 53567249 is a prime.

It is not a weakly prime, because it can be changed into another prime (53567057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26783628 + 26783629.

It is an arithmetic number, because the mean of its divisors is an integer number (26783629).

Almost surely, 2^53567257 is an apocalyptic number.

It is an amenable number.

53567257 is a deficient number, since it is larger than the sum of its proper divisors (1).

53567257 is an equidigital number, since it uses as much as digits as its factorization.

53567257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 220500, while the sum is 40.

The square root of 53567257 is about 7318.9655689858. The cubic root of 53567257 is about 376.9639354131.

It can be divided in two parts, 53567 and 257, that added together give a square (53824 = 232²).

The spelling of 53567257 in words is "fifty-three million, five hundred sixty-seven thousand, two hundred fifty-seven".