55503647 has 2 divisors, whose sum is σ = 55503648. Its totient is φ = 55503646.

The previous prime is 55503607. The next prime is 55503659. The reversal of 55503647 is 74630555.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55503647 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55503607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27751823 + 27751824.

It is an arithmetic number, because the mean of its divisors is an integer number (27751824).

Almost surely, 2^55503647 is an apocalyptic number.

55503647 is a deficient number, since it is larger than the sum of its proper divisors (1).

55503647 is an equidigital number, since it uses as much as digits as its factorization.

55503647 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 63000, while the sum is 35.

The square root of 55503647 is about 7450.0769794681. The cubic root of 55503647 is about 381.4525362263.

The spelling of 55503647 in words is "fifty-five million, five hundred three thousand, six hundred forty-seven".