541621836 has 288 divisors, whose sum is σ = 1776965120. Its totient is φ = 139594752.

The previous prime is 541621831. The next prime is 541621837. The reversal of 541621836 is 638126145.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 541621836.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (541621831) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 8083875 + ... + 8083941.

Almost surely, 2^541621836 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 541621836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (888482560).

541621836 is an abundant number, since it is smaller than the sum of its proper divisors (1235343284).

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

541621836 is a wasteful number, since it uses less digits than its factorization.

541621836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158 (or 133 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 541621836 is about 23272.7702691364. The cubic root of 541621836 is about 815.1397183524.

The spelling of 541621836 in words is "five hundred forty-one million, six hundred twenty-one thousand, eight hundred thirty-six".