253261003501 has 4 divisors (see below), whose sum is σ = 276284731104. Its totient is φ = 230237275900.

The previous prime is 253261003451. The next prime is 253261003579. The reversal of 253261003501 is 105300162352.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 253261003501 - 2⁹ = 253261002989 is a prime.

It is a super-3 number, since 3×253261003501³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 253261003501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253261003301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11511863785 + ... + 11511863806.

It is an arithmetic number, because the mean of its divisors is an integer number (69071182776).

Almost surely, 2^253261003501 is an apocalyptic number.

It is an amenable number.

253261003501 is a deficient number, since it is larger than the sum of its proper divisors (23023727603).

253261003501 is a wasteful number, since it uses less digits than its factorization.

253261003501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23023727602.

The product of its (nonzero) digits is 5400, while the sum is 28.

Adding to 253261003501 its reverse (105300162352), we get a palindrome (358561165853).

The spelling of 253261003501 in words is "two hundred fifty-three billion, two hundred sixty-one million, three thousand, five hundred one".