2051213 has 4 divisors (see below), whose sum is σ = 2055228. Its totient is φ = 2047200.

The previous prime is 2051191. The next prime is 2051219. The reversal of 2051213 is 3121502.

It is a happy number.

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 1841449 + 209764 = 1357^2 + 458^2 .

It is a cyclic number.

It is not a de Polignac number, because 2051213 - 2⁸ = 2050957 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 (2051219) 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, 1106 + ... + 2307.

It is an arithmetic number, because the mean of its divisors is an integer number (513807).

2^2051213 is an apocalyptic number.

It is an amenable number.

2051213 is a deficient number, since it is larger than the sum of its proper divisors (4015).

2051213 is an equidigital number, since it uses as much as digits as its factorization.

2051213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4014.

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 2051213 is about 1432.2056416590. The cubic root of 2051213 is about 127.0584598696.

Adding to 2051213 its reverse (3121502), we get a palindrome (5172715).

The spelling of 2051213 in words is "two million, fifty-one thousand, two hundred thirteen".