539250161 has 2 divisors, whose sum is σ = 539250162. Its totient is φ = 539250160.

The previous prime is 539250139. The next prime is 539250193. The reversal of 539250161 is 161052935.

It is an a-pointer prime, because the next prime (539250193) can be obtained adding 539250161 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 402243136 + 137007025 = 20056^2 + 11705^2 .

It is a cyclic number.

It is not a de Polignac number, because 539250161 - 2¹⁴ = 539233777 is a prime.

It is a super-2 number, since 2×539250161² = 581581472277051842, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (539250121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 269625080 + 269625081.

It is an arithmetic number, because the mean of its divisors is an integer number (269625081).

Almost surely, 2^539250161 is an apocalyptic number.

It is an amenable number.

539250161 is a deficient number, since it is larger than the sum of its proper divisors (1).

539250161 is an equidigital number, since it uses as much as digits as its factorization.

539250161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8100, while the sum is 32.

The square root of 539250161 is about 23221.7605060426. The cubic root of 539250161 is about 813.9481888636.

The spelling of 539250161 in words is "five hundred thirty-nine million, two hundred fifty thousand, one hundred sixty-one".