55189430 has 32 divisors (see below), whose sum is σ = 102316608. Its totient is φ = 21424000.

The previous prime is 55189427. The next prime is 55189457. The reversal of 55189430 is 3498155.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53015 + ... + 54045.

It is an arithmetic number, because the mean of its divisors is an integer number (3197394).

Almost surely, 2^55189430 is an apocalyptic number.

55189430 is a deficient number, since it is larger than the sum of its proper divisors (47127178).

55189430 is a wasteful number, since it uses less digits than its factorization.

55189430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1192.

The product of its (nonzero) digits is 21600, while the sum is 35.

The square root of 55189430 is about 7428.9588772586. The cubic root of 55189430 is about 380.7313477782.

The spelling of 55189430 in words is "fifty-five million, one hundred eighty-nine thousand, four hundred thirty".