542458561 has 2 divisors, whose sum is σ = 542458562. Its totient is φ = 542458560.

The previous prime is 542458549. The next prime is 542458573. The reversal of 542458561 is 165854245.

It is a balanced prime because it is at equal distance from previous prime (542458549) and next prime (542458573).

It can be written as a sum of positive squares in only one way, i.e., 478778161 + 63680400 = 21881^2 + 7980^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-542458561 is a prime.

It is a super-2 number, since 2×542458561² = 588522580804381442, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (542458361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271229280 + 271229281.

It is an arithmetic number, because the mean of its divisors is an integer number (271229281).

Almost surely, 2^542458561 is an apocalyptic number.

It is an amenable number.

542458561 is a deficient number, since it is larger than the sum of its proper divisors (1).

542458561 is an equidigital number, since it uses as much as digits as its factorization.

542458561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 192000, while the sum is 40.

The square root of 542458561 is about 23290.7398122086. The cubic root of 542458561 is about 815.5592588362.

The spelling of 542458561 in words is "five hundred forty-two million, four hundred fifty-eight thousand, five hundred sixty-one".