2105257 has 16 divisors (see below), whose sum is σ = 2764800. Its totient is φ = 1553040.

The previous prime is 2105251. The next prime is 2105267. The reversal of 2105257 is 7525012.

It is a cyclic number.

It is not a de Polignac number, because 2105257 - 2¹⁵ = 2072489 is a prime.

It is a Duffinian number.

2105257 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2105251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 744 + ... + 2182.

It is an arithmetic number, because the mean of its divisors is an integer number (172800).

2^2105257 is an apocalyptic number.

It is an amenable number.

2105257 is a deficient number, since it is larger than the sum of its proper divisors (659543).

2105257 is a wasteful number, since it uses less digits than its factorization.

2105257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1476.

The product of its (nonzero) digits is 700, while the sum is 22.

The square root of 2105257 is about 1450.9503782004. The cubic root of 2105257 is about 128.1646846731.

The spelling of 2105257 in words is "two million, one hundred five thousand, two hundred fifty-seven".