55297190 has 16 divisors (see below), whose sum is σ = 107191728. Its totient is φ = 20417376.

The previous prime is 55297189. The next prime is 55297199. The reversal of 55297190 is 9179255.

55297190 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×55297190² = 6115558443792200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55297199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 212552 + ... + 212811.

It is an arithmetic number, because the mean of its divisors is an integer number (6699483).

Almost surely, 2^55297190 is an apocalyptic number.

55297190 is a deficient number, since it is larger than the sum of its proper divisors (51894538).

55297190 is a wasteful number, since it uses less digits than its factorization.

55297190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425383.

The product of its (nonzero) digits is 28350, while the sum is 38.

The square root of 55297190 is about 7436.2080390479. The cubic root of 55297190 is about 380.9789853915.

The spelling of 55297190 in words is "fifty-five million, two hundred ninety-seven thousand, one hundred ninety".