2101797 has 12 divisors (see below), whose sum is σ = 3107104. Its totient is φ = 1368360.

The previous prime is 2101789. The next prime is 2101807. The reversal of 2101797 is 7971012.

It is not a de Polignac number, because 2101797 - 2³ = 2101789 is a prime.

It is a Duffinian number.

2101797 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2101797.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2102797) 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, 2329 + ... + 3102.

2^2101797 is an apocalyptic number.

It is an amenable number.

2101797 is a deficient number, since it is larger than the sum of its proper divisors (1005307).

2101797 is a wasteful number, since it uses less digits than its factorization.

2101797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5480 (or 5477 counting only the distinct ones).

The product of its (nonzero) digits is 882, while the sum is 27.

The square root of 2101797 is about 1449.7575659399. The cubic root of 2101797 is about 128.0944330810.

The spelling of 2101797 in words is "two million, one hundred one thousand, seven hundred ninety-seven".