540978513 has 4 divisors (see below), whose sum is σ = 721304688. Its totient is φ = 360652340.

The previous prime is 540978463. The next prime is 540978541. The reversal of 540978513 is 315879045.

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 a cyclic number.

It is not a de Polignac number, because 540978513 - 2¹² = 540974417 is a prime.

It is not an unprimeable number, because it can be changed into a prime (540978553) 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, 90163083 + ... + 90163088.

It is an arithmetic number, because the mean of its divisors is an integer number (180326172).

Almost surely, 2^540978513 is an apocalyptic number.

It is an amenable number.

540978513 is a deficient number, since it is larger than the sum of its proper divisors (180326175).

540978513 is a wasteful number, since it uses less digits than its factorization.

540978513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180326174.

The product of its (nonzero) digits is 151200, while the sum is 42.

The square root of 540978513 is about 23258.9447954975. The cubic root of 540978513 is about 814.8168572385.

The spelling of 540978513 in words is "five hundred forty million, nine hundred seventy-eight thousand, five hundred thirteen".