421172559 has 12 divisors (see below), whose sum is σ = 609562200. Its totient is φ = 280227024.

The previous prime is 421172537. The next prime is 421172561. The reversal of 421172559 is 955271124.

It is not a de Polignac number, because 421172559 - 2⁸ = 421172303 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421172579) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41389 + ... + 50550.

It is an arithmetic number, because the mean of its divisors is an integer number (50796850).

Almost surely, 2^421172559 is an apocalyptic number.

421172559 is a deficient number, since it is larger than the sum of its proper divisors (188389641).

421172559 is a wasteful number, since it uses less digits than its factorization.

421172559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92454 (or 92451 counting only the distinct ones).

The product of its digits is 25200, while the sum is 36.

The square root of 421172559 is about 20522.4891034202. The cubic root of 421172559 is about 749.5835074214.

The spelling of 421172559 in words is "four hundred twenty-one million, one hundred seventy-two thousand, five hundred fifty-nine".