540511590 has 16 divisors (see below), whose sum is σ = 1297227888. Its totient is φ = 144136416.

The previous prime is 540511589. The next prime is 540511603. The reversal of 540511590 is 95115045.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 18017053 = 540511590 / (5 + 4 + 0 + 5 + 1 + 1 + 5 + 9 + 0).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9008497 + ... + 9008556.

It is an arithmetic number, because the mean of its divisors is an integer number (81076743).

Almost surely, 2^540511590 is an apocalyptic number.

540511590 is an abundant number, since it is smaller than the sum of its proper divisors (756716298).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

540511590 is a wasteful number, since it uses less digits than its factorization.

540511590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18017063.

The product of its (nonzero) digits is 4500, while the sum is 30.

The square root of 540511590 is about 23248.9051355112. The cubic root of 540511590 is about 814.5823647197.

The spelling of 540511590 in words is "five hundred forty million, five hundred eleven thousand, five hundred ninety".