2251521027 has 48 divisors (see below), whose sum is σ = 3835453440. Its totient is φ = 1245974400.

The previous prime is 2251521023. The next prime is 2251521047. The reversal of 2251521027 is 7201251522.

It is not a de Polignac number, because 2251521027 - 2² = 2251521023 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2251521023) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 355902 + ... + 362172.

It is an arithmetic number, because the mean of its divisors is an integer number (79905280).

Almost surely, 2^2251521027 is an apocalyptic number.

2251521027 is a deficient number, since it is larger than the sum of its proper divisors (1583932413).

2251521027 is a wasteful number, since it uses less digits than its factorization.

2251521027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6464 (or 6461 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 27.

The square root of 2251521027 is about 47450.1952261527. The cubic root of 2251521027 is about 1310.6659060314.

Adding to 2251521027 its reverse (7201251522), we get a palindrome (9452772549).

The spelling of 2251521027 in words is "two billion, two hundred fifty-one million, five hundred twenty-one thousand, twenty-seven".