541561536 has 84 divisors (see below), whose sum is σ = 1575569112. Its totient is φ = 177813504.

The previous prime is 541561513. The next prime is 541561543. The reversal of 541561536 is 635165145.

541561536 is a `hidden beast` number, since 5 + 4 + 1 + 5 + 615 + 36 = 666.

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 541561536.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31576 + ... + 45608.

Almost surely, 2^541561536 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 541561536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (787784556).

541561536 is an abundant number, since it is smaller than the sum of its proper divisors (1034007576).

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

541561536 is a wasteful number, since it uses less digits than its factorization.

541561536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14118 (or 14105 counting only the distinct ones).

The product of its digits is 54000, while the sum is 36.

The square root of 541561536 is about 23271.4747276575. The cubic root of 541561536 is about 815.1094667722.

The spelling of 541561536 in words is "five hundred forty-one million, five hundred sixty-one thousand, five hundred thirty-six".