253616773 has 2 divisors, whose sum is σ = 253616774. Its totient is φ = 253616772.

The previous prime is 253616771. The next prime is 253616777. The reversal of 253616773 is 377616352.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 172580769 + 81036004 = 13137^2 + 9002^2 .

It is a cyclic number.

It is not a de Polignac number, because 253616773 - 2¹ = 253616771 is a prime.

Together with 253616771, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (253616771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126808386 + 126808387.

It is an arithmetic number, because the mean of its divisors is an integer number (126808387).

Almost surely, 2^253616773 is an apocalyptic number.

It is an amenable number.

253616773 is a deficient number, since it is larger than the sum of its proper divisors (1).

253616773 is an equidigital number, since it uses as much as digits as its factorization.

253616773 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 158760, while the sum is 40.

The square root of 253616773 is about 15925.3500118522. The cubic root of 253616773 is about 632.9838906710.

The spelling of 253616773 in words is "two hundred fifty-three million, six hundred sixteen thousand, seven hundred seventy-three".