921255049 has 8 divisors (see below), whose sum is σ = 1082313792. Its totient is φ = 773081040.

The previous prime is 921255017. The next prime is 921255059. The reversal of 921255049 is 940552129.

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 921255049 - 2⁵ = 921255017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 921254999 and 921255017.

It is not an unprimeable number, because it can be changed into a prime (921255059) 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, 3221029 + ... + 3221314.

It is an arithmetic number, because the mean of its divisors is an integer number (135289224).

Almost surely, 2^921255049 is an apocalyptic number.

It is an amenable number.

921255049 is a deficient number, since it is larger than the sum of its proper divisors (161058743).

921255049 is a wasteful number, since it uses less digits than its factorization.

921255049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6442367.

The product of its (nonzero) digits is 32400, while the sum is 37.

The square root of 921255049 is about 30352.1835952539. The cubic root of 921255049 is about 973.0308885348.

It can be divided in two parts, 9212 and 55049, that added together give a triangular number (64261 = T₃₅₈).

The spelling of 921255049 in words is "nine hundred twenty-one million, two hundred fifty-five thousand, forty-nine".