55595599 has 2 divisors, whose sum is σ = 55595600. Its totient is φ = 55595598.

The previous prime is 55595587. The next prime is 55595663. The reversal of 55595599 is 99559555.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55595599 - 2⁷ = 55595471 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55595699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27797799 + 27797800.

It is an arithmetic number, because the mean of its divisors is an integer number (27797800).

Almost surely, 2^55595599 is an apocalyptic number.

55595599 is a deficient number, since it is larger than the sum of its proper divisors (1).

55595599 is an equidigital number, since it uses as much as digits as its factorization.

55595599 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2278125, while the sum is 52.

The square root of 55595599 is about 7456.2456370482. The cubic root of 55595599 is about 381.6630687693.

The spelling of 55595599 in words is "fifty-five million, five hundred ninety-five thousand, five hundred ninety-nine".