253988173 has 2 divisors, whose sum is σ = 253988174. Its totient is φ = 253988172.

The previous prime is 253988113. The next prime is 253988183. The reversal of 253988173 is 371889352.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 226141444 + 27846729 = 15038^2 + 5277^2 .

It is a cyclic number.

It is not a de Polignac number, because 253988173 - 2¹⁷ = 253857101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (253988113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126994086 + 126994087.

It is an arithmetic number, because the mean of its divisors is an integer number (126994087).

Almost surely, 2^253988173 is an apocalyptic number.

It is an amenable number.

253988173 is a deficient number, since it is larger than the sum of its proper divisors (1).

253988173 is an equidigital number, since it uses as much as digits as its factorization.

253988173 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 362880, while the sum is 46.

The square root of 253988173 is about 15937.0064001995. The cubic root of 253988173 is about 633.2927234965.

The spelling of 253988173 in words is "two hundred fifty-three million, nine hundred eighty-eight thousand, one hundred seventy-three".