5631000 has 64 divisors (see below), whose sum is σ = 17578080. Its totient is φ = 1500800.

The previous prime is 5630987. The next prime is 5631007. The reversal of 5631000 is 1365.

It is a super-2 number, since 2×5631000² = 63416322000000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5631007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2062 + ... + 3938.

Almost surely, 2^5631000 is an apocalyptic number.

5631000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5631000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8789040).

5631000 is an abundant number, since it is smaller than the sum of its proper divisors (11947080).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5631000 is a wasteful number, since it uses less digits than its factorization.

5631000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1901 (or 1887 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 15.

The square root of 5631000 is about 2372.9728190605. The cubic root of 5631000 is about 177.9078764135.

Adding to 5631000 its reverse (1365), we get a palindrome (5632365).

The spelling of 5631000 in words is "five million, six hundred thirty-one thousand".