2151297 has 12 divisors (see below), whose sum is σ = 3129984. Its totient is φ = 1423800.

The previous prime is 2151293. The next prime is 2151301. The reversal of 2151297 is 7921512.

It is an interprime number because it is at equal distance from previous prime (2151293) and next prime (2151301).

It is not a de Polignac number, because 2151297 - 2² = 2151293 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 2151297.

It is not an unprimeable number, because it can be changed into a prime (2151293) 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, 568 + ... + 2150.

It is an arithmetic number, because the mean of its divisors is an integer number (260832).

2^2151297 is an apocalyptic number.

It is an amenable number.

2151297 is a deficient number, since it is larger than the sum of its proper divisors (978687).

2151297 is a wasteful number, since it uses less digits than its factorization.

2151297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1740 (or 1737 counting only the distinct ones).

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

The square root of 2151297 is about 1466.7300365098. The cubic root of 2151297 is about 129.0922361799.

It can be divided in two parts, 21512 and 97, that added together give a square (21609 = 147²).

The spelling of 2151297 in words is "two million, one hundred fifty-one thousand, two hundred ninety-seven".