253940101 has 8 divisors (see below), whose sum is σ = 275436504. Its totient is φ = 233172480.

The previous prime is 253940087. The next prime is 253940131. The reversal of 253940101 is 101049352.

It can be written as a sum of positive squares in 4 ways, for example, as 15876 + 253924225 = 126^2 + 15935^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 253940101 - 2¹¹ = 253938053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253940131) 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, 181470 + ... + 182863.

It is an arithmetic number, because the mean of its divisors is an integer number (34429563).

Almost surely, 2^253940101 is an apocalyptic number.

It is an amenable number.

253940101 is a deficient number, since it is larger than the sum of its proper divisors (21496403).

253940101 is a wasteful number, since it uses less digits than its factorization.

253940101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364391.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 253940101 is about 15935.4981409431. The cubic root of 253940101 is about 633.2527668214.

Adding to 253940101 its reverse (101049352), we get a palindrome (354989453).

The spelling of 253940101 in words is "two hundred fifty-three million, nine hundred forty thousand, one hundred one".