2251645401 has 8 divisors (see below), whose sum is σ = 3013355520. Its totient is φ = 1495516112.

The previous prime is 2251645391. The next prime is 2251645411. The reversal of 2251645401 is 1045461522.

It is an interprime number because it is at equal distance from previous prime (2251645391) and next prime (2251645411).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2251645401 - 2⁶ = 2251645337 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2251645411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1394265 + ... + 1395878.

It is an arithmetic number, because the mean of its divisors is an integer number (376669440).

Almost surely, 2^2251645401 is an apocalyptic number.

It is an amenable number.

2251645401 is a deficient number, since it is larger than the sum of its proper divisors (761710119).

2251645401 is a wasteful number, since it uses less digits than its factorization.

2251645401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2790415.

The product of its (nonzero) digits is 9600, while the sum is 30.

The square root of 2251645401 is about 47451.5057822194. The cubic root of 2251645401 is about 1310.6900393111.

The spelling of 2251645401 in words is "two billion, two hundred fifty-one million, six hundred forty-five thousand, four hundred one".