55503967 has 2 divisors, whose sum is σ = 55503968. Its totient is φ = 55503966.

The previous prime is 55503947. The next prime is 55503983. The reversal of 55503967 is 76930555.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55503967 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 (55503907) 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, 27751983 + 27751984.

It is an arithmetic number, because the mean of its divisors is an integer number (27751984).

Almost surely, 2^55503967 is an apocalyptic number.

55503967 is a deficient number, since it is larger than the sum of its proper divisors (1).

55503967 is an equidigital number, since it uses as much as digits as its factorization.

55503967 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 141750, while the sum is 40.

The square root of 55503967 is about 7450.0984557253. The cubic root of 55503967 is about 381.4532692988.

The spelling of 55503967 in words is "fifty-five million, five hundred three thousand, nine hundred sixty-seven".