55669090 has 32 divisors (see below), whose sum is σ = 105336000. Its totient is φ = 21155904.

The previous prime is 55669073. The next prime is 55669093. The reversal of 55669090 is 9096655.

It is not an unprimeable number, because it can be changed into a prime (55669093) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14161 + ... + 17659.

It is an arithmetic number, because the mean of its divisors is an integer number (3291750).

Almost surely, 2^55669090 is an apocalyptic number.

55669090 is a deficient number, since it is larger than the sum of its proper divisors (49666910).

55669090 is a wasteful number, since it uses less digits than its factorization.

55669090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3586.

The product of its (nonzero) digits is 72900, while the sum is 40.

The square root of 55669090 is about 7461.1721599223. The cubic root of 55669090 is about 381.8311663110.

The spelling of 55669090 in words is "fifty-five million, six hundred sixty-nine thousand, ninety".