2251071026 has 4 divisors (see below), whose sum is σ = 3376606542. Its totient is φ = 1125535512.

The previous prime is 2251071023. The next prime is 2251071041. The reversal of 2251071026 is 6201701522.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2237195401 + 13875625 = 47299^2 + 3725^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2251070986 and 2251071004.

It is not an unprimeable number, because it can be changed into a prime (2251071023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 562767755 + ... + 562767758.

Almost surely, 2^2251071026 is an apocalyptic number.

2251071026 is a deficient number, since it is larger than the sum of its proper divisors (1125535516).

2251071026 is a wasteful number, since it uses less digits than its factorization.

2251071026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1125535515.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 2251071026 is about 47445.4531646606. The cubic root of 2251071026 is about 1310.5785813208.

Adding to 2251071026 its reverse (6201701522), we get a palindrome (8452772548).

The spelling of 2251071026 in words is "two billion, two hundred fifty-one million, seventy-one thousand, twenty-six".