921353 has 2 divisors, whose sum is σ = 921354. Its totient is φ = 921352.

The previous prime is 921331. The next prime is 921373. The reversal of 921353 is 353129.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 797449 + 123904 = 893^2 + 352^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-921353 is a prime.

It is a Chen prime.

It is an Ulam number.

It is equal to p₇₂₈₃₃ and since 921353 and 72833 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (921373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 460676 + 460677.

It is an arithmetic number, because the mean of its divisors is an integer number (460677).

2⁹²¹³⁵³ is an apocalyptic number.

It is an amenable number.

921353 is a deficient number, since it is larger than the sum of its proper divisors (1).

921353 is an equidigital number, since it uses as much as digits as its factorization.

921353 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 810, while the sum is 23.

The square root of 921353 is about 959.8713455458. The cubic root of 921353 is about 97.3065372641.

The spelling of 921353 in words is "nine hundred twenty-one thousand, three hundred fifty-three".