2100451 has 2 divisors, whose sum is σ = 2100452. Its totient is φ = 2100450.

The previous prime is 2100409. The next prime is 2100463. The reversal of 2100451 is 1540012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2100451 - 2⁹ = 2099939 is a prime.

It is an Ulam number.

2100451 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (2100551) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050225 + 1050226.

It is an arithmetic number, because the mean of its divisors is an integer number (1050226).

2^2100451 is an apocalyptic number.

2100451 is a deficient number, since it is larger than the sum of its proper divisors (1).

2100451 is an equidigital number, since it uses as much as digits as its factorization.

2100451 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 2100451 is about 1449.2932760487. The cubic root of 2100451 is about 128.0670831633.

Adding to 2100451 its reverse (1540012), we get a palindrome (3640463).

The spelling of 2100451 in words is "two million, one hundred thousand, four hundred fifty-one".