50172739 has 2 divisors, whose sum is σ = 50172740. Its totient is φ = 50172738.

The previous prime is 50172737. The next prime is 50172743. The reversal of 50172739 is 93727105.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 50172739 - 2¹ = 50172737 is a prime.

Together with 50172737, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (50172737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25086369 + 25086370.

It is an arithmetic number, because the mean of its divisors is an integer number (25086370).

Almost surely, 2^50172739 is an apocalyptic number.

50172739 is a deficient number, since it is larger than the sum of its proper divisors (1).

50172739 is an equidigital number, since it uses as much as digits as its factorization.

50172739 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13230, while the sum is 34.

The square root of 50172739 is about 7083.2717722815. The cubic root of 50172739 is about 368.8269128468.

The spelling of 50172739 in words is "fifty million, one hundred seventy-two thousand, seven hundred thirty-nine".