53276921 has 2 divisors, whose sum is σ = 53276922. Its totient is φ = 53276920.

The previous prime is 53276863. The next prime is 53276981. The reversal of 53276921 is 12967235.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52765696 + 511225 = 7264^2 + 715^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53276921 is a prime.

It is a super-3 number, since 3×53276921³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (53276981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26638460 + 26638461.

It is an arithmetic number, because the mean of its divisors is an integer number (26638461).

Almost surely, 2^53276921 is an apocalyptic number.

It is an amenable number.

53276921 is a deficient number, since it is larger than the sum of its proper divisors (1).

53276921 is an equidigital number, since it uses as much as digits as its factorization.

53276921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22680, while the sum is 35.

The square root of 53276921 is about 7299.1041231099. The cubic root of 53276921 is about 376.2816496372.

The spelling of 53276921 in words is "fifty-three million, two hundred seventy-six thousand, nine hundred twenty-one".