540620501 has 4 divisors (see below), whose sum is σ = 558059904. Its totient is φ = 523181100.

The previous prime is 540620477. The next prime is 540620513. The reversal of 540620501 is 105026045.

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, and also an emirpimes, since its reverse is a distinct semiprime: 105026045 = 5 ⋅21005209.

It is a cyclic number.

It is not a de Polignac number, because 540620501 - 2²⁶ = 473511637 is a prime.

It is a super-2 number, since 2×540620501² = 584541052202982002, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (540620401) 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, 8719655 + ... + 8719716.

It is an arithmetic number, because the mean of its divisors is an integer number (139514976).

Almost surely, 2^540620501 is an apocalyptic number.

It is an amenable number.

540620501 is a deficient number, since it is larger than the sum of its proper divisors (17439403).

540620501 is a wasteful number, since it uses less digits than its factorization.

540620501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17439402.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 540620501 is about 23251.2472998762. The cubic root of 540620501 is about 814.6370727799.

Adding to 540620501 its reverse (105026045), we get a palindrome (645646546).

The spelling of 540620501 in words is "five hundred forty million, six hundred twenty thousand, five hundred one".