2251002251 has 8 divisors (see below), whose sum is σ = 2274529008. Its totient is φ = 2227500000.

The previous prime is 2251002217. The next prime is 2251002253. The reversal of 2251002251 is 1522001522.

It is a happy number.

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 2251002251 - 2²² = 2246807947 is a prime.

It is a super-2 number, since 2×2251002251² = 10134022268014134002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2251002253) 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, 222401 + ... + 232301.

It is an arithmetic number, because the mean of its divisors is an integer number (284316126).

Almost surely, 2^2251002251 is an apocalyptic number.

2251002251 is a deficient number, since it is larger than the sum of its proper divisors (23526757).

2251002251 is a wasteful number, since it uses less digits than its factorization.

2251002251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12253.

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 2251002251 is about 47444.7283794522. The cubic root of 2251002251 is about 1310.5652341986.

Adding to 2251002251 its reverse (1522001522), we get a palindrome (3773003773).

It can be divided in two parts, 225100 and 2251, that multiplied together give a square (506700100 = 22510²).

The spelling of 2251002251 in words is "two billion, two hundred fifty-one million, two thousand, two hundred fifty-one".