542251537 has 2 divisors, whose sum is σ = 542251538. Its totient is φ = 542251536.

The previous prime is 542251531. The next prime is 542251547. The reversal of 542251537 is 735152245.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 516607441 + 25644096 = 22729^2 + 5064^2 .

It is a cyclic number.

It is not a de Polignac number, because 542251537 - 2¹⁵ = 542218769 is a prime.

It is not a weakly prime, because it can be changed into another prime (542251531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271125768 + 271125769.

It is an arithmetic number, because the mean of its divisors is an integer number (271125769).

Almost surely, 2^542251537 is an apocalyptic number.

It is an amenable number.

542251537 is a deficient number, since it is larger than the sum of its proper divisors (1).

542251537 is an equidigital number, since it uses as much as digits as its factorization.

542251537 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 42000, while the sum is 34.

The square root of 542251537 is about 23286.2950466578. The cubic root of 542251537 is about 815.4554955656.

The spelling of 542251537 in words is "five hundred forty-two million, two hundred fifty-one thousand, five hundred thirty-seven".