5144400251 has 4 divisors (see below), whose sum is σ = 5144652600. Its totient is φ = 5144147904.

The previous prime is 5144400227. The next prime is 5144400253. The reversal of 5144400251 is 1520044415.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 5144400251 - 2⁶ = 5144400187 is a prime.

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 5144400251.

It is not an unprimeable number, because it can be changed into a prime (5144400253) 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, 92621 + ... + 137358.

It is an arithmetic number, because the mean of its divisors is an integer number (1286163150).

Almost surely, 2^5144400251 is an apocalyptic number.

5144400251 is a deficient number, since it is larger than the sum of its proper divisors (252349).

5144400251 is a wasteful number, since it uses less digits than its factorization.

5144400251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252348.

The product of its (nonzero) digits is 3200, while the sum is 26.

The square root of 5144400251 is about 71724.4745606407. The cubic root of 5144400251 is about 1726.2813696866.

Adding to 5144400251 its reverse (1520044415), we get a palindrome (6664444666).

The spelling of 5144400251 in words is "five billion, one hundred forty-four million, four hundred thousand, two hundred fifty-one".