53275421 has 2 divisors, whose sum is σ = 53275422. Its totient is φ = 53275420.

The previous prime is 53275361. The next prime is 53275427. The reversal of 53275421 is 12457235.

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., 51998521 + 1276900 = 7211^2 + 1130^2 .

It is a cyclic number.

It is not a de Polignac number, because 53275421 - 2¹⁸ = 53013277 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53275427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26637710 + 26637711.

It is an arithmetic number, because the mean of its divisors is an integer number (26637711).

Almost surely, 2^53275421 is an apocalyptic number.

It is an amenable number.

53275421 is a deficient number, since it is larger than the sum of its proper divisors (1).

53275421 is an equidigital number, since it uses as much as digits as its factorization.

53275421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8400, while the sum is 29.

The square root of 53275421 is about 7299.0013700506. The cubic root of 53275421 is about 376.2781182284.

The spelling of 53275421 in words is "fifty-three million, two hundred seventy-five thousand, four hundred twenty-one".