541645 has 12 divisors (see below), whose sum is σ = 704916. Its totient is φ = 399360.

The previous prime is 541631. The next prime is 541657. The reversal of 541645 is 546145.

It can be written as a sum of positive squares in 6 ways, for example, as 27556 + 514089 = 166^2 + 717^2 .

It is not a de Polignac number, because 541645 - 2⁵ = 541613 is a prime.

It is a super-3 number, since 3×541645³ = 476722302635733375, which contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

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, 525 + ... + 1165.

It is an arithmetic number, because the mean of its divisors is an integer number (58743).

2⁵⁴¹⁶⁴⁵ is an apocalyptic number.

It is an amenable number.

541645 is a deficient number, since it is larger than the sum of its proper divisors (163271).

541645 is a wasteful number, since it uses less digits than its factorization.

541645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 672 (or 659 counting only the distinct ones).

The product of its digits is 2400, while the sum is 25.

The square root of 541645 is about 735.9653524453. The cubic root of 541645 is about 81.5151338777.

The spelling of 541645 in words is "five hundred forty-one thousand, six hundred forty-five".