55995290 has 32 divisors (see below), whose sum is σ = 108879120. Its totient is φ = 20611584.

The previous prime is 55995281. The next prime is 55995301. The reversal of 55995290 is 9259955.

It is a Cunningham number, because it is equal to 7483²+1.

It can be written as a sum of positive squares in 8 ways, for example, as 8288641 + 47706649 = 2879^2 + 6907^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73592 + ... + 74348.

Almost surely, 2^55995290 is an apocalyptic number.

55995290 is a deficient number, since it is larger than the sum of its proper divisors (52883830).

55995290 is a wasteful number, since it uses less digits than its factorization.

55995290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1346.

The product of its (nonzero) digits is 182250, while the sum is 44.

The square root of 55995290 is about 7483.0000668181. Note that the first 4 decimals coincide. The cubic root of 55995290 is about 382.5755101753.

The spelling of 55995290 in words is "fifty-five million, nine hundred ninety-five thousand, two hundred ninety".