53777189 has 2 divisors, whose sum is σ = 53777190. Its totient is φ = 53777188.

The previous prime is 53777153. The next prime is 53777233. The reversal of 53777189 is 98177735.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43428100 + 10349089 = 6590^2 + 3217^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53777189 is a prime.

It is a Sophie Germain prime.

It is a Chen 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 (53777089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26888594 + 26888595.

It is an arithmetic number, because the mean of its divisors is an integer number (26888595).

Almost surely, 2^53777189 is an apocalyptic number.

It is an amenable number.

53777189 is a deficient number, since it is larger than the sum of its proper divisors (1).

53777189 is an equidigital number, since it uses as much as digits as its factorization.

53777189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 370440, while the sum is 47.

The square root of 53777189 is about 7333.2931892841. The cubic root of 53777189 is about 377.4557385645.

The spelling of 53777189 in words is "fifty-three million, seven hundred seventy-seven thousand, one hundred eighty-nine".