55936909 has 8 divisors (see below), whose sum is σ = 65288448. Its totient is φ = 46925520.

The previous prime is 55936901. The next prime is 55936913. The reversal of 55936909 is 90963955.

It is a happy number.

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 55936909 - 2³ = 55936901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55936901) 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, 84682 + ... + 85339.

It is an arithmetic number, because the mean of its divisors is an integer number (8161056).

Almost surely, 2^55936909 is an apocalyptic number.

It is an amenable number.

55936909 is a deficient number, since it is larger than the sum of its proper divisors (9351539).

55936909 is a wasteful number, since it uses less digits than its factorization.

55936909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170075.

The product of its (nonzero) digits is 328050, while the sum is 46.

The square root of 55936909 is about 7479.0981408189. The cubic root of 55936909 is about 382.4425054910.

The spelling of 55936909 in words is "fifty-five million, nine hundred thirty-six thousand, nine hundred nine".