540522251 has 4 divisors (see below), whose sum is σ = 540722904. Its totient is φ = 540321600.

The previous prime is 540522221. The next prime is 540522253. The reversal of 540522251 is 152225045.

540522251 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 540522251 - 2²² = 536327947 is a prime.

It is a super-2 number, since 2×540522251² = 584328607652214002, which contains 22 as substring.

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 540522251.

It is not an unprimeable number, because it can be changed into a prime (540522253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96230 + ... + 101691.

It is an arithmetic number, because the mean of its divisors is an integer number (135180726).

Almost surely, 2^540522251 is an apocalyptic number.

540522251 is a deficient number, since it is larger than the sum of its proper divisors (200653).

540522251 is a wasteful number, since it uses less digits than its factorization.

540522251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200652.

The product of its (nonzero) digits is 4000, while the sum is 26.

The square root of 540522251 is about 23249.1344139949. The cubic root of 540522251 is about 814.5877202666.

Adding to 540522251 its reverse (152225045), we get a palindrome (692747296).

The spelling of 540522251 in words is "five hundred forty million, five hundred twenty-two thousand, two hundred fifty-one".