920574173 has 4 divisors (see below), whose sum is σ = 952318140. Its totient is φ = 888830208.

The previous prime is 920574169. The next prime is 920574251. The reversal of 920574173 is 371475029.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 371475029 = 149 ⋅2493121.

It can be written as a sum of positive squares in 2 ways, for example, as 353515204 + 567058969 = 18802^2 + 23813^2 .

It is a cyclic number.

It is not a de Polignac number, because 920574173 - 2² = 920574169 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 (920574113) 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, 15871940 + ... + 15871997.

It is an arithmetic number, because the mean of its divisors is an integer number (238079535).

Almost surely, 2^920574173 is an apocalyptic number.

It is an amenable number.

920574173 is a deficient number, since it is larger than the sum of its proper divisors (31743967).

920574173 is a wasteful number, since it uses less digits than its factorization.

920574173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31743966.

The product of its (nonzero) digits is 52920, while the sum is 38.

The square root of 920574173 is about 30340.9652615074. The cubic root of 920574173 is about 972.7911153896.

The spelling of 920574173 in words is "nine hundred twenty million, five hundred seventy-four thousand, one hundred seventy-three".