53779181 has 2 divisors, whose sum is σ = 53779182. Its totient is φ = 53779180.

The previous prime is 53779151. The next prime is 53779189. The reversal of 53779181 is 18197735.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50282281 + 3496900 = 7091^2 + 1870^2 .

It is a cyclic number.

It is not a de Polignac number, because 53779181 - 2²² = 49584877 is a prime.

It is a super-2 number, since 2×53779181² = 5784400618061522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53779189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26889590 + 26889591.

It is an arithmetic number, because the mean of its divisors is an integer number (26889591).

Almost surely, 2^53779181 is an apocalyptic number.

It is an amenable number.

53779181 is a deficient number, since it is larger than the sum of its proper divisors (1).

53779181 is an equidigital number, since it uses as much as digits as its factorization.

53779181 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 52920, while the sum is 41.

The square root of 53779181 is about 7333.4290069517. The cubic root of 53779181 is about 377.4603990446.

The spelling of 53779181 in words is "fifty-three million, seven hundred seventy-nine thousand, one hundred eighty-one".