53783631 has 24 divisors (see below), whose sum is σ = 89738064. Its totient is φ = 30677760.

The previous prime is 53783629. The next prime is 53783659. The reversal of 53783631 is 13638735.

It is not a de Polignac number, because 53783631 - 2¹ = 53783629 is a prime.

It is a super-3 number, since 3×53783631³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53783671) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14296 + ... + 17661.

It is an arithmetic number, because the mean of its divisors is an integer number (3739086).

Almost surely, 2^53783631 is an apocalyptic number.

53783631 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

53783631 is a deficient number, since it is larger than the sum of its proper divisors (35954433).

53783631 is a wasteful number, since it uses less digits than its factorization.

53783631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31991 (or 31988 counting only the distinct ones).

The product of its digits is 45360, while the sum is 36.

The square root of 53783631 is about 7333.7324058081. The cubic root of 53783631 is about 377.4708098418.

Subtracting from 53783631 its reverse (13638735), we obtain a square (40144896 = 6336²).

It can be divided in two parts, 5378 and 3631, that added together give a palindrome (9009).

The spelling of 53783631 in words is "fifty-three million, seven hundred eighty-three thousand, six hundred thirty-one".