542491783 has 2 divisors, whose sum is σ = 542491784. Its totient is φ = 542491782.

The previous prime is 542491717. The next prime is 542491853. The reversal of 542491783 is 387194245.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-542491783 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (542497783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271245891 + 271245892.

It is an arithmetic number, because the mean of its divisors is an integer number (271245892).

Almost surely, 2^542491783 is an apocalyptic number.

542491783 is a deficient number, since it is larger than the sum of its proper divisors (1).

542491783 is an equidigital number, since it uses as much as digits as its factorization.

542491783 is an evil number, because the sum of its binary digits is even.

The product of its digits is 241920, while the sum is 43.

The square root of 542491783 is about 23291.4530031941. The cubic root of 542491783 is about 815.5759077003.

The spelling of 542491783 in words is "five hundred forty-two million, four hundred ninety-one thousand, seven hundred eighty-three".