55247503 has 2 divisors, whose sum is σ = 55247504. Its totient is φ = 55247502.

The previous prime is 55247483. The next prime is 55247509. The reversal of 55247503 is 30574255.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55247503 - 2⁵ = 55247471 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55247509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27623751 + 27623752.

It is an arithmetic number, because the mean of its divisors is an integer number (27623752).

Almost surely, 2^55247503 is an apocalyptic number.

55247503 is a deficient number, since it is larger than the sum of its proper divisors (1).

55247503 is an equidigital number, since it uses as much as digits as its factorization.

55247503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21000, while the sum is 31.

The square root of 55247503 is about 7432.8664053648. The cubic root of 55247503 is about 380.8648423075.

The spelling of 55247503 in words is "fifty-five million, two hundred forty-seven thousand, five hundred three".