2102553 has 6 divisors (see below), whose sum is σ = 3037034. Its totient is φ = 1401696.

The previous prime is 2102549. The next prime is 2102557. The reversal of 2102553 is 3552012.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2102549) and next prime (2102557).

It can be written as a sum of positive squares in only one way, i.e., 1774224 + 328329 = 1332^2 + 573^2 .

It is not a de Polignac number, because 2102553 - 2² = 2102549 is a prime.

It is a Duffinian number.

2102553 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2102557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 116800 + ... + 116817.

2^2102553 is an apocalyptic number.

It is an amenable number.

2102553 is a deficient number, since it is larger than the sum of its proper divisors (934481).

2102553 is a wasteful number, since it uses less digits than its factorization.

2102553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233623 (or 233620 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 2102553 is about 1450.0182757469. The cubic root of 2102553 is about 128.1097894297.

Adding to 2102553 its reverse (3552012), we get a palindrome (5654565).

It can be divided in two parts, 210 and 2553, that multiplied together give a triangular number (536130 = T₁₀₃₅).

The spelling of 2102553 in words is "two million, one hundred two thousand, five hundred fifty-three".