5631651 has 12 divisors (see below), whose sum is σ = 8168160. Its totient is φ = 3738960.

The previous prime is 5631629. The next prime is 5631671. The reversal of 5631651 is 1561365.

It is a happy number.

5631651 is a `hidden beast` number, since 5 + 6 + 3 + 1 + 651 = 666.

It is not a de Polignac number, because 5631651 - 2⁷ = 5631523 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (5631601) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1285 + ... + 3593.

It is an arithmetic number, because the mean of its divisors is an integer number (680680).

Almost surely, 2^5631651 is an apocalyptic number.

5631651 is a deficient number, since it is larger than the sum of its proper divisors (2536509).

5631651 is a wasteful number, since it uses less digits than its factorization.

5631651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2586 (or 2583 counting only the distinct ones).

The product of its digits is 2700, while the sum is 27.

The square root of 5631651 is about 2373.1099848090. The cubic root of 5631651 is about 177.9147321268.

The spelling of 5631651 in words is "five million, six hundred thirty-one thousand, six hundred fifty-one".