540302513 has 4 divisors (see below), whose sum is σ = 545872740. Its totient is φ = 534732288.

The previous prime is 540302507. The next prime is 540302533. The reversal of 540302513 is 315203045.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 315203045 = 5 ⋅63040609.

It can be written as a sum of positive squares in 2 ways, for example, as 447237904 + 93064609 = 21148^2 + 9647^2 .

It is not a de Polignac number, because 540302513 - 2²⁶ = 473193649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (540302533) 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, 2784968 + ... + 2785161.

It is an arithmetic number, because the mean of its divisors is an integer number (136468185).

Almost surely, 2^540302513 is an apocalyptic number.

It is an amenable number.

540302513 is a deficient number, since it is larger than the sum of its proper divisors (5570227).

540302513 is an equidigital number, since it uses as much as digits as its factorization.

540302513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5570226.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 540302513 is about 23244.4082092877. The cubic root of 540302513 is about 814.4773207796.

Adding to 540302513 its reverse (315203045), we get a palindrome (855505558).

The spelling of 540302513 in words is "five hundred forty million, three hundred two thousand, five hundred thirteen".