421522497 has 36 divisors (see below), whose sum is σ = 708647940. Its totient is φ = 240430080.

The previous prime is 421522489. The next prime is 421522501. The reversal of 421522497 is 794225124.

421522497 is a `hidden beast` number, since 42 + 1 + 522 + 4 + 97 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 134931456 + 286591041 = 11616^2 + 16929^2 .

It is not a de Polignac number, because 421522497 - 2³ = 421522489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (421522417) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 7129 + ... + 29897.

It is an arithmetic number, because the mean of its divisors is an integer number (19684665).

Almost surely, 2^421522497 is an apocalyptic number.

It is an amenable number.

421522497 is a deficient number, since it is larger than the sum of its proper divisors (287125443).

421522497 is a wasteful number, since it uses less digits than its factorization.

421522497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22814 (or 22800 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 421522497 is about 20531.0130534272. The cubic root of 421522497 is about 749.7910511259.

The spelling of 421522497 in words is "four hundred twenty-one million, five hundred twenty-two thousand, four hundred ninety-seven".