69504257 has 2 divisors, whose sum is σ = 69504258. Its totient is φ = 69504256.

The previous prime is 69504251. The next prime is 69504269. The reversal of 69504257 is 75240596.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68574961 + 929296 = 8281^2 + 964^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-69504257 is a prime.

It is a super-2 number, since 2×69504257² = 9661683482244098, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 69504257.

It is not a weakly prime, because it can be changed into another prime (69504251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34752128 + 34752129.

It is an arithmetic number, because the mean of its divisors is an integer number (34752129).

Almost surely, 2^69504257 is an apocalyptic number.

It is an amenable number.

69504257 is a deficient number, since it is larger than the sum of its proper divisors (1).

69504257 is an equidigital number, since it uses as much as digits as its factorization.

69504257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 75600, while the sum is 38.

The square root of 69504257 is about 8336.9213142502. The cubic root of 69504257 is about 411.1533202151.

The spelling of 69504257 in words is "sixty-nine million, five hundred four thousand, two hundred fifty-seven".