64249253 has 2 divisors, whose sum is σ = 64249254. Its totient is φ = 64249252.

The previous prime is 64249219. The next prime is 64249261. The reversal of 64249253 is 35294246.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60497284 + 3751969 = 7778^2 + 1937^2 .

It is a cyclic number.

It is not a de Polignac number, because 64249253 - 2²² = 60054949 is a prime.

It is a super-2 number, since 2×64249253² = 8255933022116018, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64242253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32124626 + 32124627.

It is an arithmetic number, because the mean of its divisors is an integer number (32124627).

Almost surely, 2^64249253 is an apocalyptic number.

It is an amenable number.

64249253 is a deficient number, since it is larger than the sum of its proper divisors (1).

64249253 is an equidigital number, since it uses as much as digits as its factorization.

64249253 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51840, while the sum is 35.

The square root of 64249253 is about 8015.5631742255. The cubic root of 64249253 is about 400.5186044164.

The spelling of 64249253 in words is "sixty-four million, two hundred forty-nine thousand, two hundred fifty-three".