553980421 has 2 divisors, whose sum is σ = 553980422. Its totient is φ = 553980420.

The previous prime is 553980389. The next prime is 553980443. The reversal of 553980421 is 124089355.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 330148900 + 223831521 = 18170^2 + 14961^2 .

It is a cyclic number.

It is not a de Polignac number, because 553980421 - 2⁵ = 553980389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (553980451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 276990210 + 276990211.

It is an arithmetic number, because the mean of its divisors is an integer number (276990211).

Almost surely, 2^553980421 is an apocalyptic number.

It is an amenable number.

553980421 is a deficient number, since it is larger than the sum of its proper divisors (1).

553980421 is an equidigital number, since it uses as much as digits as its factorization.

553980421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43200, while the sum is 37.

The square root of 553980421 is about 23536.7886722042. The cubic root of 553980421 is about 821.2930328577.

The spelling of 553980421 in words is "five hundred fifty-three million, nine hundred eighty thousand, four hundred twenty-one".