921038051 has 4 divisors (see below), whose sum is σ = 929980272. Its totient is φ = 912095832.

The previous prime is 921038039. The next prime is 921038093. The reversal of 921038051 is 150830129.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 150830129 = 7933 ⋅19013.

It is a cyclic number.

It is not a de Polignac number, because 921038051 - 2¹⁴ = 921021667 is a prime.

It is a super-2 number, since 2×921038051² = 1696622182779757202, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (921038351) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 4470956 + ... + 4471161.

It is an arithmetic number, because the mean of its divisors is an integer number (232495068).

Almost surely, 2^921038051 is an apocalyptic number.

921038051 is a deficient number, since it is larger than the sum of its proper divisors (8942221).

921038051 is a wasteful number, since it uses less digits than its factorization.

921038051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8942220.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 921038051 is about 30348.6087160515. The cubic root of 921038051 is about 972.9544846705.

The spelling of 921038051 in words is "nine hundred twenty-one million, thirty-eight thousand, fifty-one".