13550000251 has 32 divisors (see below), whose sum is σ = 14482742400. Its totient is φ = 12659328000.

The previous prime is 13550000213. The next prime is 13550000257. The reversal of 13550000251 is 15200005531.

It is a de Polignac number, because none of the positive numbers 2^k-13550000251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13550000257) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34130785 + ... + 34131181.

It is an arithmetic number, because the mean of its divisors is an integer number (452585700).

Almost surely, 2^13550000251 is an apocalyptic number.

13550000251 is a deficient number, since it is larger than the sum of its proper divisors (932742149).

13550000251 is a wasteful number, since it uses less digits than its factorization.

13550000251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 775.

The product of its (nonzero) digits is 750, while the sum is 22.

Adding to 13550000251 its reverse (15200005531), we get a palindrome (28750005782).

The spelling of 13550000251 in words is "thirteen billion, five hundred fifty million, two hundred fifty-one", and thus it is an aban number.