540888545 has 4 divisors (see below), whose sum is σ = 649066260. Its totient is φ = 432710832.

The previous prime is 540888497. The next prime is 540888547. The reversal of 540888545 is 545888045.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 545888045 = 5 ⋅109177609.

It can be written as a sum of positive squares in 2 ways, for example, as 113060689 + 427827856 = 10633^2 + 20684^2 .

It is a cyclic number.

It is not a de Polignac number, because 540888545 - 2²² = 536694241 is a prime.

It is a super-2 number, since 2×540888545² = 585120836224434050, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 540888545.

It is not an unprimeable number, because it can be changed into a prime (540888547) 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, 54088850 + ... + 54088859.

It is an arithmetic number, because the mean of its divisors is an integer number (162266565).

Almost surely, 2^540888545 is an apocalyptic number.

It is an amenable number.

540888545 is a deficient number, since it is larger than the sum of its proper divisors (108177715).

540888545 is a wasteful number, since it uses less digits than its factorization.

540888545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108177714.

The product of its (nonzero) digits is 1024000, while the sum is 47.

The square root of 540888545 is about 23257.0106634537. The cubic root of 540888545 is about 814.7716850764.

The spelling of 540888545 in words is "five hundred forty million, eight hundred eighty-eight thousand, five hundred forty-five".