4151220251 has 16 divisors (see below), whose sum is σ = 4412128320. Its totient is φ = 3897294720.

The previous prime is 4151220233. The next prime is 4151220277. The reversal of 4151220251 is 1520221514.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4151220251 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4151220211) 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 15 ways as a sum of consecutive naturals, for example, 711221 + ... + 717033.

It is an arithmetic number, because the mean of its divisors is an integer number (275758020).

Almost surely, 2^4151220251 is an apocalyptic number.

4151220251 is a deficient number, since it is larger than the sum of its proper divisors (260908069).

4151220251 is a wasteful number, since it uses less digits than its factorization.

4151220251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6406.

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 4151220251 is about 64429.9639220759. The cubic root of 4151220251 is about 1607.1580654055.

Adding to 4151220251 its reverse (1520221514), we get a palindrome (5671441765).

The spelling of 4151220251 in words is "four billion, one hundred fifty-one million, two hundred twenty thousand, two hundred fifty-one".