55647290 has 16 divisors (see below), whose sum is σ = 106057512. Its totient is φ = 20949504.

The previous prime is 55647271. The next prime is 55647323. The reversal of 55647290 is 9274655.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 55636681 + 10609 = 7459^2 + 103^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 163499 + ... + 163838.

Almost surely, 2^55647290 is an apocalyptic number.

55647290 is a deficient number, since it is larger than the sum of its proper divisors (50410222).

55647290 is a wasteful number, since it uses less digits than its factorization.

55647290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327361.

The product of its (nonzero) digits is 75600, while the sum is 38.

The square root of 55647290 is about 7459.7111204121. The cubic root of 55647290 is about 381.7813181444.

The spelling of 55647290 in words is "fifty-five million, six hundred forty-seven thousand, two hundred ninety".