542551523 has 4 divisors (see below), whose sum is σ = 544263360. Its totient is φ = 540839688.

The previous prime is 542551501. The next prime is 542551547. The reversal of 542551523 is 325155245.

542551523 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 542551523 - 2⁸ = 542551267 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 542551523.

It is not an unprimeable number, because it can be changed into a prime (542551423) 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, 855443 + ... + 856076.

It is an arithmetic number, because the mean of its divisors is an integer number (136065840).

Almost surely, 2^542551523 is an apocalyptic number.

542551523 is a deficient number, since it is larger than the sum of its proper divisors (1711837).

542551523 is a wasteful number, since it uses less digits than its factorization.

542551523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1711836.

The product of its digits is 30000, while the sum is 32.

The square root of 542551523 is about 23292.7354125702. The cubic root of 542551523 is about 815.6058440777.

The spelling of 542551523 in words is "five hundred forty-two million, five hundred fifty-one thousand, five hundred twenty-three".