50172491903 has 2 divisors, whose sum is σ = 50172491904. Its totient is φ = 50172491902.

The previous prime is 50172491819. The next prime is 50172491927. The reversal of 50172491903 is 30919427105.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 50172491903 - 2⁸ = 50172491647 is a prime.

It is a super-2 number, since 2×50172491903² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50172491503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25086245951 + 25086245952.

It is an arithmetic number, because the mean of its divisors is an integer number (25086245952).

Almost surely, 2^50172491903 is an apocalyptic number.

50172491903 is a deficient number, since it is larger than the sum of its proper divisors (1).

50172491903 is an equidigital number, since it uses as much as digits as its factorization.

50172491903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 68040, while the sum is 41.

The spelling of 50172491903 in words is "fifty billion, one hundred seventy-two million, four hundred ninety-one thousand, nine hundred three".