540355843 has 4 divisors (see below), whose sum is σ = 542350048. Its totient is φ = 538361640.

The previous prime is 540355841. The next prime is 540355861. The reversal of 540355843 is 348553045.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 540355843 - 2¹ = 540355841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (540355841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 996696 + ... + 997237.

It is an arithmetic number, because the mean of its divisors is an integer number (135587512).

Almost surely, 2^540355843 is an apocalyptic number.

540355843 is a deficient number, since it is larger than the sum of its proper divisors (1994205).

540355843 is a wasteful number, since it uses less digits than its factorization.

540355843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1994204.

The product of its (nonzero) digits is 144000, while the sum is 37.

The square root of 540355843 is about 23245.5553386018. Note that the first 3 decimals coincide. The cubic root of 540355843 is about 814.5041172781.

The spelling of 540355843 in words is "five hundred forty million, three hundred fifty-five thousand, eight hundred forty-three".