55117237 has 8 divisors (see below), whose sum is σ = 63039872. Its totient is φ = 47206800.

The previous prime is 55117217. The next prime is 55117277. The reversal of 55117237 is 73271155.

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 55117237 - 2¹¹ = 55115189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55117199 and 55117208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55117207) 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, 10912 + ... + 15142.

It is an arithmetic number, because the mean of its divisors is an integer number (7879984).

Almost surely, 2^55117237 is an apocalyptic number.

It is an amenable number.

55117237 is a deficient number, since it is larger than the sum of its proper divisors (7922635).

55117237 is a wasteful number, since it uses less digits than its factorization.

55117237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6099.

The product of its digits is 7350, while the sum is 31.

The square root of 55117237 is about 7424.0983964385. The cubic root of 55117237 is about 380.5652644555.

The spelling of 55117237 in words is "fifty-five million, one hundred seventeen thousand, two hundred thirty-seven".