63523501 has 2 divisors, whose sum is σ = 63523502. Its totient is φ = 63523500.

The previous prime is 63523477. The next prime is 63523511. The reversal of 63523501 is 10532536.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63520900 + 2601 = 7970^2 + 51^2 .

It is a cyclic number.

It is not a de Polignac number, because 63523501 - 2²¹ = 61426349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63523511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31761750 + 31761751.

It is an arithmetic number, because the mean of its divisors is an integer number (31761751).

Almost surely, 2^63523501 is an apocalyptic number.

It is an amenable number.

63523501 is a deficient number, since it is larger than the sum of its proper divisors (1).

63523501 is an equidigital number, since it uses as much as digits as its factorization.

63523501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2700, while the sum is 25.

The square root of 63523501 is about 7970.1631727337. The cubic root of 63523501 is about 399.0048198445.

The spelling of 63523501 in words is "sixty-three million, five hundred twenty-three thousand, five hundred one".