253606477 has 2 divisors, whose sum is σ = 253606478. Its totient is φ = 253606476.

The previous prime is 253606447. The next prime is 253606481. The reversal of 253606477 is 774606352.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 247779081 + 5827396 = 15741^2 + 2414^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-253606477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (253606447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126803238 + 126803239.

It is an arithmetic number, because the mean of its divisors is an integer number (126803239).

Almost surely, 2^253606477 is an apocalyptic number.

It is an amenable number.

253606477 is a deficient number, since it is larger than the sum of its proper divisors (1).

253606477 is an equidigital number, since it uses as much as digits as its factorization.

253606477 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 211680, while the sum is 40.

The square root of 253606477 is about 15925.0267503700. The cubic root of 253606477 is about 632.9753248727.

The spelling of 253606477 in words is "two hundred fifty-three million, six hundred six thousand, four hundred seventy-seven".