2251663351 has 4 divisors (see below), whose sum is σ = 2573329552. Its totient is φ = 1929997152.

The previous prime is 2251663291. The next prime is 2251663367. The reversal of 2251663351 is 1533661522.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1533661522 = 2 ⋅766830761.

It is a cyclic number.

It is not a de Polignac number, because 2251663351 - 2⁹ = 2251662839 is a prime.

It is a super-3 number, since 3×2251663351³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2251673351) 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 3 ways as a sum of consecutive naturals, for example, 160833090 + ... + 160833103.

It is an arithmetic number, because the mean of its divisors is an integer number (643332388).

Almost surely, 2^2251663351 is an apocalyptic number.

2251663351 is a deficient number, since it is larger than the sum of its proper divisors (321666201).

2251663351 is an equidigital number, since it uses as much as digits as its factorization.

2251663351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321666200.

The product of its digits is 32400, while the sum is 34.

The square root of 2251663351 is about 47451.6949223102. The cubic root of 2251663351 is about 1310.6935222194.

The spelling of 2251663351 in words is "two billion, two hundred fifty-one million, six hundred sixty-three thousand, three hundred fifty-one".