542456881 has 2 divisors, whose sum is σ = 542456882. Its totient is φ = 542456880.

The previous prime is 542456851. The next prime is 542456891. The reversal of 542456881 is 188654245.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 420906256 + 121550625 = 20516^2 + 11025^2 .

It is a cyclic number.

It is not a de Polignac number, because 542456881 - 2⁷ = 542456753 is a prime.

It is a super-2 number, since 2×542456881² = 588518935488496322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (542456851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271228440 + 271228441.

It is an arithmetic number, because the mean of its divisors is an integer number (271228441).

Almost surely, 2^542456881 is an apocalyptic number.

It is an amenable number.

542456881 is a deficient number, since it is larger than the sum of its proper divisors (1).

542456881 is an equidigital number, since it uses as much as digits as its factorization.

542456881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 307200, while the sum is 43.

The square root of 542456881 is about 23290.7037463448. The cubic root of 542456881 is about 815.5584169034.

The spelling of 542456881 in words is "five hundred forty-two million, four hundred fifty-six thousand, eight hundred eighty-one".