55620659 has 2 divisors, whose sum is σ = 55620660. Its totient is φ = 55620658.

The previous prime is 55620613. The next prime is 55620667. The reversal of 55620659 is 95602655.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55620659 - 2¹² = 55616563 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (55620679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27810329 + 27810330.

It is an arithmetic number, because the mean of its divisors is an integer number (27810330).

Almost surely, 2^55620659 is an apocalyptic number.

55620659 is a deficient number, since it is larger than the sum of its proper divisors (1).

55620659 is an equidigital number, since it uses as much as digits as its factorization.

55620659 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81000, while the sum is 38.

The square root of 55620659 is about 7457.9259181089. The cubic root of 55620659 is about 381.7204056806.

The spelling of 55620659 in words is "fifty-five million, six hundred twenty thousand, six hundred fifty-nine".