542611505 has 4 divisors (see below), whose sum is σ = 651133812. Its totient is φ = 434089200.

The previous prime is 542611477. The next prime is 542611513. The reversal of 542611505 is 505116245.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 505116245 = 5 ⋅101023249.

It can be written as a sum of positive squares in 2 ways, for example, as 68939809 + 473671696 = 8303^2 + 21764^2 .

It is not a de Polignac number, because 542611505 - 2¹² = 542607409 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54261146 + ... + 54261155.

It is an arithmetic number, because the mean of its divisors is an integer number (162783453).

Almost surely, 2^542611505 is an apocalyptic number.

It is an amenable number.

542611505 is a deficient number, since it is larger than the sum of its proper divisors (108522307).

542611505 is a wasteful number, since it uses less digits than its factorization.

542611505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108522306.

The product of its (nonzero) digits is 6000, while the sum is 29.

The square root of 542611505 is about 23294.0229458117. The cubic root of 542611505 is about 815.6358995133.

The spelling of 542611505 in words is "five hundred forty-two million, six hundred eleven thousand, five hundred five".