55540190 has 16 divisors (see below), whose sum is σ = 105853392. Its totient is φ = 20909184.

The previous prime is 55540171. The next prime is 55540217. The reversal of 55540190 is 9104555.

It is a super-2 number, since 2×55540190² = 6169425410472200, which contains 22 as substring.

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, 163184 + ... + 163523.

It is an arithmetic number, because the mean of its divisors is an integer number (6615837).

Almost surely, 2^55540190 is an apocalyptic number.

55540190 is a deficient number, since it is larger than the sum of its proper divisors (50313202).

55540190 is a wasteful number, since it uses less digits than its factorization.

55540190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326731.

The product of its (nonzero) digits is 4500, while the sum is 29.

The square root of 55540190 is about 7452.5291009160. The cubic root of 55540190 is about 381.5362326002.

The spelling of 55540190 in words is "fifty-five million, five hundred forty thousand, one hundred ninety".