55199004 has 24 divisors (see below), whose sum is σ = 147197568. Its totient is φ = 15771120.

The previous prime is 55198999. The next prime is 55199029. The reversal of 55199004 is 40099155.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 328482 + ... + 328649.

It is an arithmetic number, because the mean of its divisors is an integer number (6133232).

Almost surely, 2^55199004 is an apocalyptic number.

It is an amenable number.

55199004 is an abundant number, since it is smaller than the sum of its proper divisors (91998564).

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

55199004 is a wasteful number, since it uses less digits than its factorization.

55199004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 657145 (or 657143 counting only the distinct ones).

The product of its (nonzero) digits is 8100, while the sum is 33.

The square root of 55199004 is about 7429.6032195535. The cubic root of 55199004 is about 380.7533623268.

The spelling of 55199004 in words is "fifty-five million, one hundred ninety-nine thousand, four".