2106523 has 2 divisors, whose sum is σ = 2106524. Its totient is φ = 2106522.

The previous prime is 2106491. The next prime is 2106529. The reversal of 2106523 is 3256012.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2106523 - 2⁵ = 2106491 is a prime.

2106523 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2106523.

It is not a weakly prime, because it can be changed into another prime (2106529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1053261 + 1053262.

It is an arithmetic number, because the mean of its divisors is an integer number (1053262).

2^2106523 is an apocalyptic number.

2106523 is a deficient number, since it is larger than the sum of its proper divisors (1).

2106523 is an equidigital number, since it uses as much as digits as its factorization.

2106523 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 2106523 is about 1451.3865784139. The cubic root of 2106523 is about 128.1903702113.

The spelling of 2106523 in words is "two million, one hundred six thousand, five hundred twenty-three".