251242251324053 has 4 divisors (see below), whose sum is σ = 274082455989888. Its totient is φ = 228402046658220.

The previous prime is 251242251324013. The next prime is 251242251324061. The reversal of 251242251324053 is 350423152242152.

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 251242251324053 - 2¹⁰ = 251242251323029 is a prime.

It is a super-2 number, since 2×251242251324053² (a number of 30 digits) contains 22 as substring.

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 251242251324053.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (251242251324013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11420102332901 + ... + 11420102332922.

It is an arithmetic number, because the mean of its divisors is an integer number (68520613997472).

Almost surely, 2^{251242251324053} is an apocalyptic number.

It is an amenable number.

251242251324053 is a deficient number, since it is larger than the sum of its proper divisors (22840204665835).

251242251324053 is a wasteful number, since it uses less digits than its factorization.

251242251324053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22840204665834.

The product of its (nonzero) digits is 576000, while the sum is 41.

The spelling of 251242251324053 in words is "two hundred fifty-one trillion, two hundred forty-two billion, two hundred fifty-one million, three hundred twenty-four thousand, fifty-three".