55001290 has 16 divisors (see below), whose sum is σ = 104826312. Its totient is φ = 20706304.

The previous prime is 55001263. The next prime is 55001311. The reversal of 55001290 is 9210055.

It can be written as a sum of positive squares in 4 ways, for example, as 40462321 + 14538969 = 6361^2 + 3813^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 161599 + ... + 161938.

Almost surely, 2^55001290 is an apocalyptic number.

55001290 is a deficient number, since it is larger than the sum of its proper divisors (49825022).

55001290 is a wasteful number, since it uses less digits than its factorization.

55001290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323561.

The product of its (nonzero) digits is 450, while the sum is 22.

The square root of 55001290 is about 7416.2854583680. The cubic root of 55001290 is about 380.2982192703.

The spelling of 55001290 in words is "fifty-five million, one thousand, two hundred ninety".