55631307 has 8 divisors (see below), whose sum is σ = 74258640. Its totient is φ = 37045760.

The previous prime is 55631299. The next prime is 55631321. The reversal of 55631307 is 70313655.

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

It is a cyclic number.

It is not a de Polignac number, because 55631307 - 2³ = 55631299 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55631347) 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, 7194 + ... + 12767.

It is an arithmetic number, because the mean of its divisors is an integer number (9282330).

Almost surely, 2^55631307 is an apocalyptic number.

55631307 is a deficient number, since it is larger than the sum of its proper divisors (18627333).

55631307 is a wasteful number, since it uses less digits than its factorization.

55631307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20893.

The product of its (nonzero) digits is 9450, while the sum is 30.

The square root of 55631307 is about 7458.6397553441. The cubic root of 55631307 is about 381.7447629345.

The spelling of 55631307 in words is "fifty-five million, six hundred thirty-one thousand, three hundred seven".