540653557 has 2 divisors, whose sum is σ = 540653558. Its totient is φ = 540653556.

The previous prime is 540653539. The next prime is 540653563. The reversal of 540653557 is 755356045.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 468895716 + 71757841 = 21654^2 + 8471^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-540653557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (540653587) 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 as a sum of consecutive naturals, namely, 270326778 + 270326779.

It is an arithmetic number, because the mean of its divisors is an integer number (270326779).

Almost surely, 2^540653557 is an apocalyptic number.

It is an amenable number.

540653557 is a deficient number, since it is larger than the sum of its proper divisors (1).

540653557 is an equidigital number, since it uses as much as digits as its factorization.

540653557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 315000, while the sum is 40.

The square root of 540653557 is about 23251.9581325961. The cubic root of 540653557 is about 814.6536759820.

The spelling of 540653557 in words is "five hundred forty million, six hundred fifty-three thousand, five hundred fifty-seven".