53166649 has 2 divisors, whose sum is σ = 53166650. Its totient is φ = 53166648.

The previous prime is 53166629. The next prime is 53166653. The reversal of 53166649 is 94666135.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52461049 + 705600 = 7243^2 + 840^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53166649 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (53166629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26583324 + 26583325.

It is an arithmetic number, because the mean of its divisors is an integer number (26583325).

Almost surely, 2^53166649 is an apocalyptic number.

It is an amenable number.

53166649 is a deficient number, since it is larger than the sum of its proper divisors (1).

53166649 is an equidigital number, since it uses as much as digits as its factorization.

53166649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 116640, while the sum is 40.

The square root of 53166649 is about 7291.5464066273. The cubic root of 53166649 is about 376.0218624115.

The spelling of 53166649 in words is "fifty-three million, one hundred sixty-six thousand, six hundred forty-nine".