420190553 has 2 divisors, whose sum is σ = 420190554. Its totient is φ = 420190552.

The previous prime is 420190543. The next prime is 420190583. The reversal of 420190553 is 355091024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 414000409 + 6190144 = 20347^2 + 2488^2 .

It is a cyclic number.

It is not a de Polignac number, because 420190553 - 2⁸ = 420190297 is a prime.

It is not a weakly prime, because it can be changed into another prime (420190543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210095276 + 210095277.

It is an arithmetic number, because the mean of its divisors is an integer number (210095277).

Almost surely, 2^420190553 is an apocalyptic number.

It is an amenable number.

420190553 is a deficient number, since it is larger than the sum of its proper divisors (1).

420190553 is an equidigital number, since it uses as much as digits as its factorization.

420190553 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 420190553 is about 20498.5500218918. The cubic root of 420190553 is about 749.0004777172. Note that the first 3 decimals are identical.

The spelling of 420190553 in words is "four hundred twenty million, one hundred ninety thousand, five hundred fifty-three".