75172423 has 2 divisors, whose sum is σ = 75172424. Its totient is φ = 75172422.

The previous prime is 75172403. The next prime is 75172463. The reversal of 75172423 is 32427157.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 75172423 - 2²⁵ = 41617991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75172403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37586211 + 37586212.

It is an arithmetic number, because the mean of its divisors is an integer number (37586212).

Almost surely, 2^75172423 is an apocalyptic number.

75172423 is a deficient number, since it is larger than the sum of its proper divisors (1).

75172423 is an equidigital number, since it uses as much as digits as its factorization.

75172423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11760, while the sum is 31.

The square root of 75172423 is about 8670.2031694765. The cubic root of 75172423 is about 422.0392568468.

The spelling of 75172423 in words is "seventy-five million, one hundred seventy-two thousand, four hundred twenty-three".