421053552 has 200 divisors, whose sum is σ = 1336856400. Its totient is φ = 127346688.

The previous prime is 421053551. The next prime is 421053557. The reversal of 421053552 is 255350124.

It is a happy number.

421053552 is a `hidden beast` number, since 4 + 2 + 105 + 3 + 552 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421053551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 638599 + ... + 639257.

It is an arithmetic number, because the mean of its divisors is an integer number (6684282).

Almost surely, 2^421053552 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 421053552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (668428200).

421053552 is an abundant number, since it is smaller than the sum of its proper divisors (915802848).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

421053552 is a wasteful number, since it uses less digits than its factorization.

421053552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 725 (or 710 counting only the distinct ones).

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

The square root of 421053552 is about 20519.5894695776. The cubic root of 421053552 is about 749.5128997129.

The spelling of 421053552 in words is "four hundred twenty-one million, fifty-three thousand, five hundred fifty-two".