63113257 has 4 divisors (see below), whose sum is σ = 63131076. Its totient is φ = 63095440.

The previous prime is 63113243. The next prime is 63113273. The reversal of 63113257 is 75231136.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 32764176 + 30349081 = 5724^2 + 5509^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63113257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63113287) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1594 + ... + 11347.

It is an arithmetic number, because the mean of its divisors is an integer number (15782769).

Almost surely, 2^63113257 is an apocalyptic number.

It is an amenable number.

63113257 is a deficient number, since it is larger than the sum of its proper divisors (17819).

63113257 is a wasteful number, since it uses less digits than its factorization.

63113257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17818.

The product of its digits is 3780, while the sum is 28.

The square root of 63113257 is about 7944.3852499737. The cubic root of 63113257 is about 398.1440204187.

The spelling of 63113257 in words is "sixty-three million, one hundred thirteen thousand, two hundred fifty-seven".