540125861 has 4 divisors (see below), whose sum is σ = 589228224. Its totient is φ = 491023500.

The previous prime is 540125857. The next prime is 540125879. The reversal of 540125861 is 168521045.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 540125861 - 2² = 540125857 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 (540125801) 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, 24551165 + ... + 24551186.

It is an arithmetic number, because the mean of its divisors is an integer number (147307056).

Almost surely, 2^540125861 is an apocalyptic number.

It is an amenable number.

540125861 is a deficient number, since it is larger than the sum of its proper divisors (49102363).

540125861 is a wasteful number, since it uses less digits than its factorization.

540125861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49102362.

The product of its (nonzero) digits is 9600, while the sum is 32.

The square root of 540125861 is about 23240.6080170033. The cubic root of 540125861 is about 814.3885466037.

The spelling of 540125861 in words is "five hundred forty million, one hundred twenty-five thousand, eight hundred sixty-one".