63817253 has 2 divisors, whose sum is σ = 63817254. Its totient is φ = 63817252.

The previous prime is 63817241. The next prime is 63817297. The reversal of 63817253 is 35271836.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61199329 + 2617924 = 7823^2 + 1618^2 .

It is a cyclic number.

It is not a de Polignac number, because 63817253 - 2²² = 59622949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63817223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31908626 + 31908627.

It is an arithmetic number, because the mean of its divisors is an integer number (31908627).

Almost surely, 2^63817253 is an apocalyptic number.

It is an amenable number.

63817253 is a deficient number, since it is larger than the sum of its proper divisors (1).

63817253 is an equidigital number, since it uses as much as digits as its factorization.

63817253 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30240, while the sum is 35.

The square root of 63817253 is about 7988.5701474044. The cubic root of 63817253 is about 399.6189141325.

The spelling of 63817253 in words is "sixty-three million, eight hundred seventeen thousand, two hundred fifty-three".