921522973 has 8 divisors (see below), whose sum is σ = 1053355520. Its totient is φ = 789737040.

The previous prime is 921522941. The next prime is 921522977. The reversal of 921522973 is 379225129.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 921522973 - 2⁵ = 921522941 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (921522977) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60583 + ... + 74251.

It is an arithmetic number, because the mean of its divisors is an integer number (131669440).

Almost surely, 2^921522973 is an apocalyptic number.

It is an amenable number.

921522973 is a deficient number, since it is larger than the sum of its proper divisors (131832547).

921522973 is a wasteful number, since it uses less digits than its factorization.

921522973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23307.

The product of its digits is 68040, while the sum is 40.

The square root of 921522973 is about 30356.5968613084. The cubic root of 921522973 is about 973.1252066282.

The spelling of 921522973 in words is "nine hundred twenty-one million, five hundred twenty-two thousand, nine hundred seventy-three".