542551811 has 8 divisors (see below), whose sum is σ = 558009648. Its totient is φ = 527200000.

The previous prime is 542551799. The next prime is 542551813. The reversal of 542551811 is 118155245.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 542551811 - 2¹⁰ = 542550787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (542551813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16070 + ... + 36651.

It is an arithmetic number, because the mean of its divisors is an integer number (69751206).

Almost surely, 2^542551811 is an apocalyptic number.

542551811 is a deficient number, since it is larger than the sum of its proper divisors (15457837).

542551811 is a wasteful number, since it uses less digits than its factorization.

542551811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53013.

The product of its digits is 8000, while the sum is 32.

The square root of 542551811 is about 23292.7415947544. The cubic root of 542551811 is about 815.6059883924.

The spelling of 542551811 in words is "five hundred forty-two million, five hundred fifty-one thousand, eight hundred eleven".