63523601 has 4 divisors (see below), whose sum is σ = 65714100. Its totient is φ = 61333104.

The previous prime is 63523591. The next prime is 63523609. The reversal of 63523601 is 10632536.

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 10233601 + 53290000 = 3199^2 + 7300^2 .

It is a cyclic number.

It is not a de Polignac number, because 63523601 - 2¹⁰ = 63522577 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (63523609) 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, 1095206 + ... + 1095263.

It is an arithmetic number, because the mean of its divisors is an integer number (16428525).

Almost surely, 2^63523601 is an apocalyptic number.

It is an amenable number.

63523601 is a deficient number, since it is larger than the sum of its proper divisors (2190499).

63523601 is a wasteful number, since it uses less digits than its factorization.

63523601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2190498.

The product of its (nonzero) digits is 3240, while the sum is 26.

The square root of 63523601 is about 7970.1694461285. The cubic root of 63523601 is about 399.0050292183.

The spelling of 63523601 in words is "sixty-three million, five hundred twenty-three thousand, six hundred one".