53181169 has 2 divisors, whose sum is σ = 53181170. Its totient is φ = 53181168.

The previous prime is 53181137. The next prime is 53181181. The reversal of 53181169 is 96118135.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46991025 + 6190144 = 6855^2 + 2488^2 .

It is a cyclic number.

It is not a de Polignac number, because 53181169 - 2⁵ = 53181137 is a prime.

It is a super-2 number, since 2×53181169² = 5656473472413122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (53181199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26590584 + 26590585.

It is an arithmetic number, because the mean of its divisors is an integer number (26590585).

Almost surely, 2^53181169 is an apocalyptic number.

It is an amenable number.

53181169 is a deficient number, since it is larger than the sum of its proper divisors (1).

53181169 is an equidigital number, since it uses as much as digits as its factorization.

53181169 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6480, while the sum is 34.

The square root of 53181169 is about 7292.5420122204. The cubic root of 53181169 is about 376.0560902629.

The spelling of 53181169 in words is "fifty-three million, one hundred eighty-one thousand, one hundred sixty-nine".