421250553 has 12 divisors (see below), whose sum is σ = 613859220. Its totient is φ = 278347776.

The previous prime is 421250551. The next prime is 421250561. The reversal of 421250553 is 355052124.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 56746089 + 364504464 = 7533^2 + 19092^2 .

It is not a de Polignac number, because 421250553 - 2¹ = 421250551 is a prime.

It is not an unprimeable number, because it can be changed into a prime (421250551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 206088 + ... + 208121.

It is an arithmetic number, because the mean of its divisors is an integer number (51154935).

Almost surely, 2^421250553 is an apocalyptic number.

It is an amenable number.

421250553 is a deficient number, since it is larger than the sum of its proper divisors (192608667).

421250553 is a wasteful number, since it uses less digits than its factorization.

421250553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414328 (or 414325 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 421250553 is about 20524.3892235555. The cubic root of 421250553 is about 749.6297746076.

The spelling of 421250553 in words is "four hundred twenty-one million, two hundred fifty thousand, five hundred fifty-three".