181359053 has 2 divisors, whose sum is σ = 181359054. Its totient is φ = 181359052.

The previous prime is 181359037. The next prime is 181359133. The reversal of 181359053 is 350953181.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 142396489 + 38962564 = 11933^2 + 6242^2 .

It is a cyclic number.

It is not a de Polignac number, because 181359053 - 2⁴ = 181359037 is a prime.

It is a super-2 number, since 2×181359053² = 65782212210113618, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (181359253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90679526 + 90679527.

It is an arithmetic number, because the mean of its divisors is an integer number (90679527).

Almost surely, 2^181359053 is an apocalyptic number.

It is an amenable number.

181359053 is a deficient number, since it is larger than the sum of its proper divisors (1).

181359053 is an equidigital number, since it uses as much as digits as its factorization.

181359053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16200, while the sum is 35.

The square root of 181359053 is about 13466.9615355506. The cubic root of 181359053 is about 566.0390757025.

The spelling of 181359053 in words is "one hundred eighty-one million, three hundred fifty-nine thousand, fifty-three".