2102501 has 4 divisors (see below), whose sum is σ = 2121900. Its totient is φ = 2083104.

The previous prime is 2102497. The next prime is 2102519. The reversal of 2102501 is 1052012.

It is a Cunningham number, because it is equal to 1450²+1.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1464100 + 638401 = 1210^2 + 799^2 .

It is a cyclic number.

It is not a de Polignac number, because 2102501 - 2² = 2102497 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 (2102531) 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, 9536 + ... + 9753.

It is an arithmetic number, because the mean of its divisors is an integer number (530475).

2^2102501 is an apocalyptic number.

It is an amenable number.

2102501 is a deficient number, since it is larger than the sum of its proper divisors (19399).

2102501 is a wasteful number, since it uses less digits than its factorization.

2102501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19398.

The product of its (nonzero) digits is 20, while the sum is 11.

The square root of 2102501 is about 1450.0003448275. Note that the first 3 decimals coincide. The cubic root of 2102501 is about 128.1087332908.

Adding to 2102501 its reverse (1052012), we get a palindrome (3154513).

The spelling of 2102501 in words is "two million, one hundred two thousand, five hundred one".