55900998 has 96 divisors (see below), whose sum is σ = 135862272. Its totient is φ = 16531200.

The previous prime is 55900997. The next prime is 55901011. The reversal of 55900998 is 89900955.

55900998 is a `hidden beast` number, since 559 + 0 + 0 + 9 + 98 = 666.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55900997) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 673465 + ... + 673547.

It is an arithmetic number, because the mean of its divisors is an integer number (1415232).

Almost surely, 2^55900998 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55900998, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67931136).

55900998 is an abundant number, since it is smaller than the sum of its proper divisors (79961274).

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

55900998 is a wasteful number, since it uses less digits than its factorization.

55900998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210 (or 207 counting only the distinct ones).

The product of its (nonzero) digits is 145800, while the sum is 45.

The square root of 55900998 is about 7476.6969980065. The cubic root of 55900998 is about 382.3606464042.

The spelling of 55900998 in words is "fifty-five million, nine hundred thousand, nine hundred ninety-eight".