921255016 has 32 divisors (see below), whose sum is σ = 1885718880. Its totient is φ = 418456000.

The previous prime is 921254989. The next prime is 921255017. The reversal of 921255016 is 610552129.

It is not an unprimeable number, because it can be changed into a prime (921255017) 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, 164535 + ... + 170041.

It is an arithmetic number, because the mean of its divisors is an integer number (58928715).

Almost surely, 2^921255016 is an apocalyptic number.

It is an amenable number.

921255016 is an abundant number, since it is smaller than the sum of its proper divisors (964463864).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

921255016 is a wasteful number, since it uses less digits than its factorization.

921255016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7425 (or 7421 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 31.

The square root of 921255016 is about 30352.1830516357. The cubic root of 921255016 is about 973.0308769166.

The spelling of 921255016 in words is "nine hundred twenty-one million, two hundred fifty-five thousand, sixteen".