2113451 has 2 divisors, whose sum is σ = 2113452. Its totient is φ = 2113450.

The previous prime is 2113421. The next prime is 2113459. The reversal of 2113451 is 1543112.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2113451 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2113459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1056725 + 1056726.

It is an arithmetic number, because the mean of its divisors is an integer number (1056726).

2^2113451 is an apocalyptic number.

2113451 is a deficient number, since it is larger than the sum of its proper divisors (1).

2113451 is an equidigital number, since it uses as much as digits as its factorization.

2113451 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120, while the sum is 17.

The square root of 2113451 is about 1453.7713025094. The cubic root of 2113451 is about 128.3307486221.

Adding to 2113451 its reverse (1543112), we get a palindrome (3656563).

The spelling of 2113451 in words is "two million, one hundred thirteen thousand, four hundred fifty-one".