253061005 has 4 divisors (see below), whose sum is σ = 303673212. Its totient is φ = 202448800.

The previous prime is 253060993. The next prime is 253061027. The reversal of 253061005 is 500160352.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 148571721 + 104489284 = 12189^2 + 10222^2 .

It is not a de Polignac number, because 253061005 - 2¹⁷ = 252929933 is a prime.

It is a super-2 number, since 2×253061005² = 128079744503220050, which contains 22 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25306096 + ... + 25306105.

It is an arithmetic number, because the mean of its divisors is an integer number (75918303).

Almost surely, 2^253061005 is an apocalyptic number.

It is an amenable number.

253061005 is a deficient number, since it is larger than the sum of its proper divisors (50612207).

253061005 is an equidigital number, since it uses as much as digits as its factorization.

253061005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50612206.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 253061005 is about 15907.8912807449. The cubic root of 253061005 is about 632.5211853736.

The spelling of 253061005 in words is "two hundred fifty-three million, sixty-one thousand, five".