542817257 has 2 divisors, whose sum is σ = 542817258. Its totient is φ = 542817256.

The previous prime is 542817239. The next prime is 542817263. The reversal of 542817257 is 752718245.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 477466201 + 65351056 = 21851^2 + 8084^2 .

It is a cyclic number.

It is not a de Polignac number, because 542817257 - 2⁶ = 542817193 is a prime.

It is not a weakly prime, because it can be changed into another prime (542817217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271408628 + 271408629.

It is an arithmetic number, because the mean of its divisors is an integer number (271408629).

Almost surely, 2^542817257 is an apocalyptic number.

It is an amenable number.

542817257 is a deficient number, since it is larger than the sum of its proper divisors (1).

542817257 is an equidigital number, since it uses as much as digits as its factorization.

542817257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 156800, while the sum is 41.

The square root of 542817257 is about 23298.4389391221. The cubic root of 542817257 is about 815.7389797152.

The spelling of 542817257 in words is "five hundred forty-two million, eight hundred seventeen thousand, two hundred fifty-seven".