2551240005401 has 4 divisors (see below), whose sum is σ = 2551263240912. Its totient is φ = 2551216769892.

The previous prime is 2551240005397. The next prime is 2551240005407. The reversal of 2551240005401 is 1045000421552.

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 2551240005401 - 2² = 2551240005397 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2551240005407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11452271 + ... + 11672916.

It is an arithmetic number, because the mean of its divisors is an integer number (637815810228).

Almost surely, 2^{2551240005401} is an apocalyptic number.

It is an amenable number.

2551240005401 is a deficient number, since it is larger than the sum of its proper divisors (23235511).

2551240005401 is a wasteful number, since it uses less digits than its factorization.

2551240005401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23235510.

The product of its (nonzero) digits is 8000, while the sum is 29.

Adding to 2551240005401 its reverse (1045000421552), we get a palindrome (3596240426953).

The spelling of 2551240005401 in words is "two trillion, five hundred fifty-one billion, two hundred forty million, five thousand, four hundred one".