55598290 has 24 divisors (see below), whose sum is σ = 110004300. Its totient is φ = 20217120.

The previous prime is 55598273. The next prime is 55598303. The reversal of 55598290 is 9289555.

It can be written as a sum of positive squares in 2 ways, for example, as 54804409 + 793881 = 7403^2 + 891^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21765 + ... + 24184.

Almost surely, 2^55598290 is an apocalyptic number.

55598290 is a deficient number, since it is larger than the sum of its proper divisors (54406010).

55598290 is a wasteful number, since it uses less digits than its factorization.

55598290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45978 (or 45967 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 43.

The square root of 55598290 is about 7456.4260876106. The cubic root of 55598290 is about 381.6692265634.

The spelling of 55598290 in words is "fifty-five million, five hundred ninety-eight thousand, two hundred ninety".