542513 has 4 divisors (see below), whose sum is σ = 547428. Its totient is φ = 537600.

The previous prime is 542497. The next prime is 542519. The reversal of 542513 is 315245.

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 123904 + 418609 = 352^2 + 647^2 .

It is a cyclic number.

It is not a de Polignac number, because 542513 - 2⁴ = 542497 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 (542519) 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, 2288 + ... + 2513.

It is an arithmetic number, because the mean of its divisors is an integer number (136857).

2⁵⁴²⁵¹³ is an apocalyptic number.

It is an amenable number.

542513 is a deficient number, since it is larger than the sum of its proper divisors (4915).

542513 is a wasteful number, since it uses less digits than its factorization.

542513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4914.

The product of its digits is 600, while the sum is 20.

The square root of 542513 is about 736.5548180550. The cubic root of 542513 is about 81.5586540026.

Adding to 542513 its reverse (315245), we get a palindrome (857758).

The spelling of 542513 in words is "five hundred forty-two thousand, five hundred thirteen".