55717190 has 16 divisors (see below), whose sum is σ = 103002192. Its totient is φ = 21684384.

The previous prime is 55717187. The next prime is 55717213. The reversal of 55717190 is 9171755.

It is a super-3 number, since 3×55717190³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 55717190.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74924 + ... + 75663.

It is an arithmetic number, because the mean of its divisors is an integer number (6437637).

Almost surely, 2^55717190 is an apocalyptic number.

55717190 is a deficient number, since it is larger than the sum of its proper divisors (47285002).

55717190 is a wasteful number, since it uses less digits than its factorization.

55717190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150631.

The product of its (nonzero) digits is 11025, while the sum is 35.

The square root of 55717190 is about 7464.3948180680. The cubic root of 55717190 is about 381.9411063872.

The spelling of 55717190 in words is "fifty-five million, seven hundred seventeen thousand, one hundred ninety".