55584290 has 8 divisors (see below), whose sum is σ = 100051740. Its totient is φ = 22233712.

The previous prime is 55584289. The next prime is 55584341. The reversal of 55584290 is 9248555.

It can be written as a sum of positive squares in 2 ways, for example, as 47872561 + 7711729 = 6919^2 + 2777^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×55584290² = 6179226589608200, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2779205 + ... + 2779224.

Almost surely, 2^55584290 is an apocalyptic number.

55584290 is a deficient number, since it is larger than the sum of its proper divisors (44467450).

55584290 is a wasteful number, since it uses less digits than its factorization.

55584290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5558436.

The product of its (nonzero) digits is 72000, while the sum is 38.

The square root of 55584290 is about 7455.4872409521. The cubic root of 55584290 is about 381.6371883015.

The spelling of 55584290 in words is "fifty-five million, five hundred eighty-four thousand, two hundred ninety".