64952281 has 2 divisors, whose sum is σ = 64952282. Its totient is φ = 64952280.

The previous prime is 64952263. The next prime is 64952309. The reversal of 64952281 is 18225946.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63920025 + 1032256 = 7995^2 + 1016^2 .

It is a cyclic number.

It is not a de Polignac number, because 64952281 - 2⁹ = 64951769 is a prime.

It is a super-2 number, since 2×64952281² = 8437597614205922, 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 64952281.

It is not a weakly prime, because it can be changed into another prime (64952201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32476140 + 32476141.

It is an arithmetic number, because the mean of its divisors is an integer number (32476141).

Almost surely, 2^64952281 is an apocalyptic number.

It is an amenable number.

64952281 is a deficient number, since it is larger than the sum of its proper divisors (1).

64952281 is an equidigital number, since it uses as much as digits as its factorization.

64952281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34560, while the sum is 37.

The square root of 64952281 is about 8059.2977981956. The cubic root of 64952281 is about 401.9741594571.

The spelling of 64952281 in words is "sixty-four million, nine hundred fifty-two thousand, two hundred eighty-one".