540478117 has 4 divisors (see below), whose sum is σ = 549338476. Its totient is φ = 531617760.

The previous prime is 540478063. The next prime is 540478121. The reversal of 540478117 is 711874045.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 308037601 + 232440516 = 17551^2 + 15246^2 .

It is a cyclic number.

It is not a de Polignac number, because 540478117 - 2¹⁹ = 539953829 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 (540478177) 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, 4430088 + ... + 4430209.

It is an arithmetic number, because the mean of its divisors is an integer number (137334619).

Almost surely, 2^540478117 is an apocalyptic number.

It is an amenable number.

540478117 is a deficient number, since it is larger than the sum of its proper divisors (8860359).

540478117 is an equidigital number, since it uses as much as digits as its factorization.

540478117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8860358.

The product of its (nonzero) digits is 31360, while the sum is 37.

The square root of 540478117 is about 23248.1852410032. The cubic root of 540478117 is about 814.5655491208.

It can be divided in two parts, 5404 and 78117, that added together give a 4-th power (83521 = 17⁴).

The spelling of 540478117 in words is "five hundred forty million, four hundred seventy-eight thousand, one hundred seventeen".