253988161 has 8 divisors (see below), whose sum is σ = 291220160. Its totient is φ = 216993168.

The previous prime is 253988113. The next prime is 253988173. The reversal of 253988161 is 161889352.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 253988161 - 2¹¹ = 253986113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (253982161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56946 + ... + 61243.

It is an arithmetic number, because the mean of its divisors is an integer number (36402520).

Almost surely, 2^253988161 is an apocalyptic number.

It is an amenable number.

253988161 is a deficient number, since it is larger than the sum of its proper divisors (37231999).

253988161 is a wasteful number, since it uses less digits than its factorization.

253988161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118503.

The product of its digits is 103680, while the sum is 43.

The square root of 253988161 is about 15937.0060237173. The cubic root of 253988161 is about 633.2927135229.

The spelling of 253988161 in words is "two hundred fifty-three million, nine hundred eighty-eight thousand, one hundred sixty-one".