56543631 has 8 divisors (see below), whose sum is σ = 75573120. Its totient is φ = 37604952.

The previous prime is 56543629. The next prime is 56543647. The reversal of 56543631 is 13634565.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 56543631 - 2¹ = 56543629 is a prime.

It is a super-2 number, since 2×56543631² = 6394364413328322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 56543592 and 56543601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56543621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21235 + ... + 23748.

It is an arithmetic number, because the mean of its divisors is an integer number (9446640).

Almost surely, 2^56543631 is an apocalyptic number.

56543631 is a deficient number, since it is larger than the sum of its proper divisors (19029489).

56543631 is a wasteful number, since it uses less digits than its factorization.

56543631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45405.

The product of its digits is 32400, while the sum is 33.

The square root of 56543631 is about 7519.5499200418. The cubic root of 56543631 is about 383.8202622923.

The spelling of 56543631 in words is "fifty-six million, five hundred forty-three thousand, six hundred thirty-one".