653088421 has 2 divisors, whose sum is σ = 653088422. Its totient is φ = 653088420.

The previous prime is 653088409. The next prime is 653088521. The reversal of 653088421 is 124880356.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 584430625 + 68657796 = 24175^2 + 8286^2 .

It is a cyclic number.

It is not a de Polignac number, because 653088421 - 2⁵ = 653088389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (653088521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 326544210 + 326544211.

It is an arithmetic number, because the mean of its divisors is an integer number (326544211).

Almost surely, 2^653088421 is an apocalyptic number.

It is an amenable number.

653088421 is a deficient number, since it is larger than the sum of its proper divisors (1).

653088421 is an equidigital number, since it uses as much as digits as its factorization.

653088421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46080, while the sum is 37.

The square root of 653088421 is about 25555.5947103565. The cubic root of 653088421 is about 867.6088925310.

The spelling of 653088421 in words is "six hundred fifty-three million, eighty-eight thousand, four hundred twenty-one".