540145523 has 8 divisors (see below), whose sum is σ = 546421248. Its totient is φ = 533892744.

The previous prime is 540145513. The next prime is 540145553. The reversal of 540145523 is 325541045.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 540145523 - 2²⁶ = 473036659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (540145513) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44090 + ... + 54992.

It is an arithmetic number, because the mean of its divisors is an integer number (68302656).

Almost surely, 2^540145523 is an apocalyptic number.

540145523 is a deficient number, since it is larger than the sum of its proper divisors (6275725).

540145523 is a wasteful number, since it uses less digits than its factorization.

540145523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11473.

The product of its (nonzero) digits is 12000, while the sum is 29.

The square root of 540145523 is about 23241.0310227408. The cubic root of 540145523 is about 814.3984284445.

Adding to 540145523 its reverse (325541045), we get a palindrome (865686568).

The spelling of 540145523 in words is "five hundred forty million, one hundred forty-five thousand, five hundred twenty-three".