55651317 has 4 divisors (see below), whose sum is σ = 74201760. Its totient is φ = 37100876.

The previous prime is 55651307. The next prime is 55651333. The reversal of 55651317 is 71315655.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 55651317 - 2⁴ = 55651301 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55651307) 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, 9275217 + ... + 9275222.

It is an arithmetic number, because the mean of its divisors is an integer number (18550440).

Almost surely, 2^55651317 is an apocalyptic number.

It is an amenable number.

55651317 is a deficient number, since it is larger than the sum of its proper divisors (18550443).

55651317 is a wasteful number, since it uses less digits than its factorization.

55651317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18550442.

The product of its digits is 15750, while the sum is 33.

The square root of 55651317 is about 7459.9810321475. The cubic root of 55651317 is about 381.7905273158.

The spelling of 55651317 in words is "fifty-five million, six hundred fifty-one thousand, three hundred seventeen".