55503659 has 2 divisors, whose sum is σ = 55503660. Its totient is φ = 55503658.

The previous prime is 55503647. The next prime is 55503683. The reversal of 55503659 is 95630555.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55503659 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (55503059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27751829 + 27751830.

It is an arithmetic number, because the mean of its divisors is an integer number (27751830).

Almost surely, 2^55503659 is an apocalyptic number.

55503659 is a deficient number, since it is larger than the sum of its proper divisors (1).

55503659 is an equidigital number, since it uses as much as digits as its factorization.

55503659 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 101250, while the sum is 38.

The square root of 55503659 is about 7450.0777848288. The cubic root of 55503659 is about 381.4525637166.

The spelling of 55503659 in words is "fifty-five million, five hundred three thousand, six hundred fifty-nine".