63533957 has 4 divisors (see below), whose sum is σ = 63741216. Its totient is φ = 63326700.

The previous prime is 63533941. The next prime is 63533959. The reversal of 63533957 is 75933536.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 63533957 - 2⁴ = 63533941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63533959) 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, 103169 + ... + 103782.

It is an arithmetic number, because the mean of its divisors is an integer number (15935304).

Almost surely, 2^63533957 is an apocalyptic number.

It is an amenable number.

63533957 is a deficient number, since it is larger than the sum of its proper divisors (207259).

63533957 is a wasteful number, since it uses less digits than its factorization.

63533957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207258.

The product of its digits is 255150, while the sum is 41.

The square root of 63533957 is about 7970.8190921636. The cubic root of 63533957 is about 399.0267107744.

The spelling of 63533957 in words is "sixty-three million, five hundred thirty-three thousand, nine hundred fifty-seven".