2100951 has 8 divisors (see below), whose sum is σ = 3112560. Its totient is φ = 1400616.

The previous prime is 2100941. The next prime is 2100953. The reversal of 2100951 is 1590012.

It is not a de Polignac number, because 2100951 - 2¹⁰ = 2099927 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100953) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38880 + ... + 38933.

It is an arithmetic number, because the mean of its divisors is an integer number (389070).

2^2100951 is an apocalyptic number.

2100951 is a deficient number, since it is larger than the sum of its proper divisors (1011609).

2100951 is an equidigital number, since it uses as much as digits as its factorization.

2100951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77822 (or 77816 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 18.

The square root of 2100951 is about 1449.4657636522. The cubic root of 2100951 is about 128.0772442289.

Adding to 2100951 its reverse (1590012), we get a palindrome (3690963).

The spelling of 2100951 in words is "two million, one hundred thousand, nine hundred fifty-one".