55830631 has 4 divisors (see below), whose sum is σ = 56663992. Its totient is φ = 54997272.

The previous prime is 55830623. The next prime is 55830653. The reversal of 55830631 is 13603855.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55830631 - 2³ = 55830623 is a prime.

It is a super-2 number, since 2×55830631² = 6234118715716322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55830593 and 55830602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55830611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 416580 + ... + 416713.

It is an arithmetic number, because the mean of its divisors is an integer number (14165998).

Almost surely, 2^55830631 is an apocalyptic number.

55830631 is a deficient number, since it is larger than the sum of its proper divisors (833361).

55830631 is an equidigital number, since it uses as much as digits as its factorization.

55830631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 833360.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 55830631 is about 7471.9897617703. The cubic root of 55830631 is about 382.2001431940.

The spelling of 55830631 in words is "fifty-five million, eight hundred thirty thousand, six hundred thirty-one".