55519902 has 24 divisors (see below), whose sum is σ = 121488120. Its totient is φ = 18322800.

The previous prime is 55519889. The next prime is 55519903. The reversal of 55519902 is 20991555.

55519902 is a `hidden beast` number, since 55 + 519 + 90 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55519903) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13452 + ... + 17087.

It is an arithmetic number, because the mean of its divisors is an integer number (5062005).

Almost surely, 2^55519902 is an apocalyptic number.

55519902 is an abundant number, since it is smaller than the sum of its proper divisors (65968218).

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

55519902 is a wasteful number, since it uses less digits than its factorization.

55519902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30648 (or 30645 counting only the distinct ones).

The product of its (nonzero) digits is 20250, while the sum is 36.

The square root of 55519902 is about 7451.1678279314. The cubic root of 55519902 is about 381.4897704509.

The spelling of 55519902 in words is "fifty-five million, five hundred nineteen thousand, nine hundred two".