55518701 has 8 divisors (see below), whose sum is σ = 63496704. Its totient is φ = 47552400.

The previous prime is 55518689. The next prime is 55518709. The reversal of 55518701 is 10781555.

It is a happy number.

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

It is not a de Polignac number, because 55518701 - 2²² = 51324397 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55518709) 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, 13151 + ... + 16851.

It is an arithmetic number, because the mean of its divisors is an integer number (7937088).

Almost surely, 2^55518701 is an apocalyptic number.

It is an amenable number.

55518701 is a deficient number, since it is larger than the sum of its proper divisors (7978003).

55518701 is a wasteful number, since it uses less digits than its factorization.

55518701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5851.

The product of its (nonzero) digits is 7000, while the sum is 32.

The square root of 55518701 is about 7451.0872361019. The cubic root of 55518701 is about 381.4870196505.

The spelling of 55518701 in words is "fifty-five million, five hundred eighteen thousand, seven hundred one".