921275 has 12 divisors (see below), whose sum is σ = 1170312. Its totient is φ = 719040.

The previous prime is 921259. The next prime is 921287. The reversal of 921275 is 572129.

It is not a de Polignac number, because 921275 - 2⁴ = 921259 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 921275.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 647 + ... + 1503.

It is an arithmetic number, because the mean of its divisors is an integer number (97526).

2⁹²¹²⁷⁵ is an apocalyptic number.

921275 is a deficient number, since it is larger than the sum of its proper divisors (249037).

921275 is a wasteful number, since it uses less digits than its factorization.

921275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 910 (or 905 counting only the distinct ones).

The product of its digits is 1260, while the sum is 26.

The square root of 921275 is about 959.8307142408. The cubic root of 921275 is about 97.3037912576.

It can be divided in two parts, 9212 and 75, that multiplied together give a triangular number (690900 = T₁₁₇₅).

The spelling of 921275 in words is "nine hundred twenty-one thousand, two hundred seventy-five".