2197251 has 12 divisors (see below), whose sum is σ = 3627312. Its totient is φ = 1255536.

The previous prime is 2197241. The next prime is 2197253. The reversal of 2197251 is 1527912.

It is not a de Polignac number, because 2197251 - 2¹⁵ = 2164483 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2197253) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17376 + ... + 17501.

It is an arithmetic number, because the mean of its divisors is an integer number (302276).

2^2197251 is an apocalyptic number.

2197251 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2197251 is a deficient number, since it is larger than the sum of its proper divisors (1430061).

2197251 is a wasteful number, since it uses less digits than its factorization.

2197251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34890 (or 34887 counting only the distinct ones).

The product of its digits is 1260, while the sum is 27.

The square root of 2197251 is about 1482.3127200426. The cubic root of 2197251 is about 130.0049505018.

The spelling of 2197251 in words is "two million, one hundred ninety-seven thousand, two hundred fifty-one".