53535631 has 4 divisors (see below), whose sum is σ = 54036072. Its totient is φ = 53035192.

The previous prime is 53535619. The next prime is 53535641. The reversal of 53535631 is 13653535.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-53535631 is a prime.

It is a super-2 number, since 2×53535631² = 5732127573136322, which contains 22 as substring.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 53535593 and 53535602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53535641) 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, 250060 + ... + 250273.

It is an arithmetic number, because the mean of its divisors is an integer number (13509018).

Almost surely, 2^53535631 is an apocalyptic number.

53535631 is a deficient number, since it is larger than the sum of its proper divisors (500441).

53535631 is a wasteful number, since it uses less digits than its factorization.

53535631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500440.

The product of its digits is 20250, while the sum is 31.

The square root of 53535631 is about 7316.8046987739. The cubic root of 53535631 is about 376.8897345607.

The spelling of 53535631 in words is "fifty-three million, five hundred thirty-five thousand, six hundred thirty-one".