253028173 has 2 divisors, whose sum is σ = 253028174. Its totient is φ = 253028172.

The previous prime is 253028117. The next prime is 253028189. The reversal of 253028173 is 371820352.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 223412809 + 29615364 = 14947^2 + 5442^2 .

It is a cyclic number.

It is not a de Polignac number, because 253028173 - 2⁹ = 253027661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (253022173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126514086 + 126514087.

It is an arithmetic number, because the mean of its divisors is an integer number (126514087).

Almost surely, 2^253028173 is an apocalyptic number.

It is an amenable number.

253028173 is a deficient number, since it is larger than the sum of its proper divisors (1).

253028173 is an equidigital number, since it uses as much as digits as its factorization.

253028173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 253028173 is about 15906.8593066010. The cubic root of 253028173 is about 632.4938298700.

It can be divided in two parts, 2530 and 28173, that added together give a palindrome (30703).

The spelling of 253028173 in words is "two hundred fifty-three million, twenty-eight thousand, one hundred seventy-three".