420317553 has 8 divisors (see below), whose sum is σ = 560774368. Its totient is φ = 280036224.

The previous prime is 420317551. The next prime is 420317567. The reversal of 420317553 is 355713024.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 420317553 - 2¹ = 420317551 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 420317553.

It is not an unprimeable number, because it can be changed into a prime (420317551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38176 + ... + 47937.

It is an arithmetic number, because the mean of its divisors is an integer number (70096796).

Almost surely, 2^420317553 is an apocalyptic number.

It is an amenable number.

420317553 is a deficient number, since it is larger than the sum of its proper divisors (140456815).

420317553 is a wasteful number, since it uses less digits than its factorization.

420317553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87743.

The product of its (nonzero) digits is 12600, while the sum is 30.

The square root of 420317553 is about 20501.6475679395. The cubic root of 420317553 is about 749.0759303725.

The spelling of 420317553 in words is "four hundred twenty million, three hundred seventeen thousand, five hundred fifty-three".