53235631 has 4 divisors (see below), whose sum is σ = 54368352. Its totient is φ = 52102912.

The previous prime is 53235629. The next prime is 53235659. The reversal of 53235631 is 13653235.

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

It is a cyclic number.

It is not a de Polignac number, because 53235631 - 2¹ = 53235629 is a prime.

It is a super-2 number, since 2×53235631² = 5668064815936322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 53235631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53235661) 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, 566290 + ... + 566383.

It is an arithmetic number, because the mean of its divisors is an integer number (13592088).

Almost surely, 2^53235631 is an apocalyptic number.

53235631 is a deficient number, since it is larger than the sum of its proper divisors (1132721).

53235631 is a wasteful number, since it uses less digits than its factorization.

53235631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1132720.

The product of its digits is 8100, while the sum is 28.

The square root of 53235631 is about 7296.2751455794. The cubic root of 53235631 is about 376.1844175123.

Adding to 53235631 its reverse (13653235), we get a palindrome (66888866).

It can be divided in two parts, 532 and 35631, that added together give a palindrome (36163).

The spelling of 53235631 in words is "fifty-three million, two hundred thirty-five thousand, six hundred thirty-one".