541640 has 32 divisors (see below), whose sum is σ = 1330560. Its totient is φ = 196800.

The previous prime is 541631. The next prime is 541657. The reversal of 541640 is 46145.

It is a happy number.

It is a Smith number, since the sum of its digits (20) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 176 + ... + 1055.

It is an arithmetic number, because the mean of its divisors is an integer number (41580).

2⁵⁴¹⁶⁴⁰ is an apocalyptic number.

It is an amenable number.

541640 is an abundant number, since it is smaller than the sum of its proper divisors (788920).

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

541640 is a wasteful number, since it uses less digits than its factorization.

541640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1253 (or 1249 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 541640 is about 735.9619555385. The cubic root of 541640 is about 81.5148830511.

Adding to 541640 its reverse (46145), we get a palindrome (587785).

The spelling of 541640 in words is "five hundred forty-one thousand, six hundred forty".