55418903 has 2 divisors, whose sum is σ = 55418904. Its totient is φ = 55418902.

The previous prime is 55418897. The next prime is 55418977. The reversal of 55418903 is 30981455.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55418903 - 2⁴ = 55418887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55418203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27709451 + 27709452.

It is an arithmetic number, because the mean of its divisors is an integer number (27709452).

Almost surely, 2^55418903 is an apocalyptic number.

55418903 is a deficient number, since it is larger than the sum of its proper divisors (1).

55418903 is an equidigital number, since it uses as much as digits as its factorization.

55418903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21600, while the sum is 35.

The square root of 55418903 is about 7444.3873488689. The cubic root of 55418903 is about 381.2583010644.

The spelling of 55418903 in words is "fifty-five million, four hundred eighteen thousand, nine hundred three".