631552 has 18 divisors (see below), whose sum is σ = 1261148. Its totient is φ = 315648.

The previous prime is 631549. The next prime is 631559. The reversal of 631552 is 255136.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (631559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 978 + ... + 1489.

2⁶³¹⁵⁵² is an apocalyptic number.

It is an amenable number.

631552 is a deficient number, since it is larger than the sum of its proper divisors (629596).

631552 is an equidigital number, since it uses as much as digits as its factorization.

631552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2483 (or 2469 counting only the distinct ones).

The product of its digits is 900, while the sum is 22.

The square root of 631552 is about 794.7024600440. The cubic root of 631552 is about 85.7965263580.

Adding to 631552 its reverse (255136), we get a palindrome (886688).

The spelling of 631552 in words is "six hundred thirty-one thousand, five hundred fifty-two".