2051597 has 4 divisors (see below), whose sum is σ = 2095296. Its totient is φ = 2007900.

The previous prime is 2051593. The next prime is 2051617. The reversal of 2051597 is 7951502.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2051597 - 2² = 2051593 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2051593) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21779 + ... + 21872.

It is an arithmetic number, because the mean of its divisors is an integer number (523824).

2^2051597 is an apocalyptic number.

It is an amenable number.

2051597 is a deficient number, since it is larger than the sum of its proper divisors (43699).

2051597 is an equidigital number, since it uses as much as digits as its factorization.

2051597 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43698.

The product of its (nonzero) digits is 3150, while the sum is 29.

The square root of 2051597 is about 1432.3396943463. The cubic root of 2051597 is about 127.0663880897.

The spelling of 2051597 in words is "two million, fifty-one thousand, five hundred ninety-seven".