731522573 has 4 divisors (see below), whose sum is σ = 733050240. Its totient is φ = 729994908.

The previous prime is 731522557. The next prime is 731522599. The reversal of 731522573 is 375225137.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 375225137 = 7 ⋅53603591.

It is a cyclic number.

It is not a de Polignac number, because 731522573 - 2⁴ = 731522557 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 (731522873) 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, 763115 + ... + 764072.

It is an arithmetic number, because the mean of its divisors is an integer number (183262560).

Almost surely, 2^731522573 is an apocalyptic number.

It is an amenable number.

731522573 is a deficient number, since it is larger than the sum of its proper divisors (1527667).

731522573 is a wasteful number, since it uses less digits than its factorization.

731522573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1527666.

The product of its digits is 44100, while the sum is 35.

The square root of 731522573 is about 27046.6739729675. The cubic root of 731522573 is about 901.0369008001.

The spelling of 731522573 in words is "seven hundred thirty-one million, five hundred twenty-two thousand, five hundred seventy-three".