55433290 has 16 divisors (see below), whose sum is σ = 108851040. Its totient is φ = 20157520.

The previous prime is 55433227. The next prime is 55433303. The reversal of 55433290 is 9233455.

55433290 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 251860 + ... + 252079.

It is an arithmetic number, because the mean of its divisors is an integer number (6803190).

Almost surely, 2^55433290 is an apocalyptic number.

55433290 is a deficient number, since it is larger than the sum of its proper divisors (53417750).

55433290 is a wasteful number, since it uses less digits than its factorization.

55433290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503957.

The product of its (nonzero) digits is 16200, while the sum is 31.

The square root of 55433290 is about 7445.3535846191. The cubic root of 55433290 is about 381.2912903412.

The spelling of 55433290 in words is "fifty-five million, four hundred thirty-three thousand, two hundred ninety".