53042440251 has 8 divisors (see below), whose sum is σ = 70761060864. Its totient is φ = 35342723240.

The previous prime is 53042440247. The next prime is 53042440259. The reversal of 53042440251 is 15204424035.

53042440251 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 53042440251 - 2² = 53042440247 is a prime.

It is not an unprimeable number, because it can be changed into a prime (53042440259) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4719351 + ... + 4730576.

It is an arithmetic number, because the mean of its divisors is an integer number (8845132608).

Almost surely, 2^53042440251 is an apocalyptic number.

53042440251 is a deficient number, since it is larger than the sum of its proper divisors (17718620613).

53042440251 is a wasteful number, since it uses less digits than its factorization.

53042440251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9451801.

The product of its (nonzero) digits is 19200, while the sum is 30.

Adding to 53042440251 its reverse (15204424035), we get a palindrome (68246864286).

The spelling of 53042440251 in words is "fifty-three billion, forty-two million, four hundred forty thousand, two hundred fifty-one".