921152851 has 16 divisors (see below), whose sum is σ = 1000156960. Its totient is φ = 845406720.

The previous prime is 921152849. The next prime is 921152857. The reversal of 921152851 is 158251129.

It is a 9-Lehmer number, since φ(921152851) divides (921152851-1)⁹.

It is a cyclic number.

It is not a de Polignac number, because 921152851 - 2¹ = 921152849 is a prime.

It is the 30351-st Hogben number.

It is not an unprimeable number, because it can be changed into a prime (921152857) by changing a digit.

It is a nontrivial repunit in base 30350.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 166705 + ... + 172141.

It is an arithmetic number, because the mean of its divisors is an integer number (62509810).

Almost surely, 2^921152851 is an apocalyptic number.

921152851 is a deficient number, since it is larger than the sum of its proper divisors (79004109).

921152851 is a wasteful number, since it uses less digits than its factorization.

921152851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5734.

The product of its digits is 7200, while the sum is 34.

The square root of 921152851 is about 30350.5000123556. The cubic root of 921152851 is about 972.9949066467.

The spelling of 921152851 in words is "nine hundred twenty-one million, one hundred fifty-two thousand, eight hundred fifty-one".