540621359 has 4 divisors (see below), whose sum is σ = 550821816. Its totient is φ = 530420904.

The previous prime is 540621329. The next prime is 540621373. The reversal of 540621359 is 953126045.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 953126045 = 5 ⋅190625209.

It is a cyclic number.

It is not a de Polignac number, because 540621359 - 2²⁰ = 539572783 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (540621329) 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, 5100149 + ... + 5100254.

It is an arithmetic number, because the mean of its divisors is an integer number (137705454).

Almost surely, 2^540621359 is an apocalyptic number.

540621359 is a deficient number, since it is larger than the sum of its proper divisors (10200457).

540621359 is a wasteful number, since it uses less digits than its factorization.

540621359 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10200456.

The product of its (nonzero) digits is 32400, while the sum is 35.

The square root of 540621359 is about 23251.2657504920. The cubic root of 540621359 is about 814.6375037404.

The spelling of 540621359 in words is "five hundred forty million, six hundred twenty-one thousand, three hundred fifty-nine".