540145553 has 2 divisors, whose sum is σ = 540145554. Its totient is φ = 540145552.

The previous prime is 540145513. The next prime is 540145559. The reversal of 540145553 is 355541045.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 505665169 + 34480384 = 22487^2 + 5872^2 .

It is a cyclic number.

It is not a de Polignac number, because 540145553 - 2¹⁰ = 540144529 is a prime.

It is not a weakly prime, because it can be changed into another prime (540145559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 270072776 + 270072777.

It is an arithmetic number, because the mean of its divisors is an integer number (270072777).

Almost surely, 2^540145553 is an apocalyptic number.

It is an amenable number.

540145553 is a deficient number, since it is larger than the sum of its proper divisors (1).

540145553 is an equidigital number, since it uses as much as digits as its factorization.

540145553 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30000, while the sum is 32.

The square root of 540145553 is about 23241.0316681511. The cubic root of 540145553 is about 814.3984435219.

Adding to 540145553 its reverse (355541045), we get a palindrome (895686598).

The spelling of 540145553 in words is "five hundred forty million, one hundred forty-five thousand, five hundred fifty-three".