542171653 has 2 divisors, whose sum is σ = 542171654. Its totient is φ = 542171652.

The previous prime is 542171639. The next prime is 542171671. The reversal of 542171653 is 356171245.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 530012484 + 12159169 = 23022^2 + 3487^2 .

It is a cyclic number.

It is not a de Polignac number, because 542171653 - 2⁵ = 542171621 is a prime.

It is equal to p_28456270 and since 542171653 and 28456270 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (542171603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271085826 + 271085827.

It is an arithmetic number, because the mean of its divisors is an integer number (271085827).

Almost surely, 2^542171653 is an apocalyptic number.

It is an amenable number.

542171653 is a deficient number, since it is larger than the sum of its proper divisors (1).

542171653 is an equidigital number, since it uses as much as digits as its factorization.

542171653 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25200, while the sum is 34.

The square root of 542171653 is about 23284.5797256468. The cubic root of 542171653 is about 815.4154495467.

The spelling of 542171653 in words is "five hundred forty-two million, one hundred seventy-one thousand, six hundred fifty-three".