540723197 has 4 divisors (see below), whose sum is σ = 617969376. Its totient is φ = 463477020.

The previous prime is 540723137. The next prime is 540723247. The reversal of 540723197 is 791327045.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 540723197 - 2¹⁴ = 540706813 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 540723197.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (540723137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38623079 + ... + 38623092.

It is an arithmetic number, because the mean of its divisors is an integer number (154492344).

Almost surely, 2^540723197 is an apocalyptic number.

It is an amenable number.

540723197 is a deficient number, since it is larger than the sum of its proper divisors (77246179).

540723197 is an equidigital number, since it uses as much as digits as its factorization.

540723197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77246178.

The product of its (nonzero) digits is 52920, while the sum is 38.

The square root of 540723197 is about 23253.4555926641. The cubic root of 540723197 is about 814.6886521977.

The spelling of 540723197 in words is "five hundred forty million, seven hundred twenty-three thousand, one hundred ninety-seven".