421511552 has 64 divisors (see below), whose sum is σ = 1046960640. Its totient is φ = 164221440.

The previous prime is 421511543. The next prime is 421511581. The reversal of 421511552 is 255115124.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11528 + ... + 31239.

It is an arithmetic number, because the mean of its divisors is an integer number (16358760).

Almost surely, 2^421511552 is an apocalyptic number.

It is an amenable number.

421511552 is an abundant number, since it is smaller than the sum of its proper divisors (625449088).

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

421511552 is a wasteful number, since it uses less digits than its factorization.

421511552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42799 (or 42787 counting only the distinct ones).

The product of its digits is 2000, while the sum is 26.

The square root of 421511552 is about 20530.7465037197. The cubic root of 421511552 is about 749.7845615284.

Adding to 421511552 its reverse (255115124), we get a palindrome (676626676).

The spelling of 421511552 in words is "four hundred twenty-one million, five hundred eleven thousand, five hundred fifty-two".