55102190 has 96 divisors (see below), whose sum is σ = 122266368. Its totient is φ = 17740800.

The previous prime is 55102129. The next prime is 55102193. The reversal of 55102190 is 9120155.

It is a super-2 number, since 2×55102190² = 6072502685592200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55102193) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 487574 + ... + 487686.

It is an arithmetic number, because the mean of its divisors is an integer number (1273608).

Almost surely, 2^55102190 is an apocalyptic number.

55102190 is an abundant number, since it is smaller than the sum of its proper divisors (67164178).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55102190 is a wasteful number, since it uses less digits than its factorization.

55102190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186 (or 175 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 23.

The square root of 55102190 is about 7423.0849382181. The cubic root of 55102190 is about 380.5306298776.

The spelling of 55102190 in words is "fifty-five million, one hundred two thousand, one hundred ninety".