75423973 has 4 divisors (see below), whose sum is σ = 75505068. Its totient is φ = 75342880.

The previous prime is 75423911. The next prime is 75423989. The reversal of 75423973 is 37932457.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 66048129 + 9375844 = 8127^2 + 3062^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-75423973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75423773) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39136 + ... + 41017.

It is an arithmetic number, because the mean of its divisors is an integer number (18876267).

Almost surely, 2^75423973 is an apocalyptic number.

It is an amenable number.

75423973 is a deficient number, since it is larger than the sum of its proper divisors (81095).

75423973 is an equidigital number, since it uses as much as digits as its factorization.

75423973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81094.

The product of its digits is 158760, while the sum is 40.

The square root of 75423973 is about 8684.6976343451. The cubic root of 75423973 is about 422.5094903509.

The spelling of 75423973 in words is "seventy-five million, four hundred twenty-three thousand, nine hundred seventy-three".