2151013 has 2 divisors, whose sum is σ = 2151014. Its totient is φ = 2151012.

The previous prime is 2151011. The next prime is 2151031. The reversal of 2151013 is 3101512.

Together with next prime (2151031) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1483524 + 667489 = 1218^2 + 817^2 .

It is a cyclic number.

It is not a de Polignac number, because 2151013 - 2¹ = 2151011 is a prime.

Together with 2151011, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 2150984 and 2151002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2151011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1075506 + 1075507.

It is an arithmetic number, because the mean of its divisors is an integer number (1075507).

2^2151013 is an apocalyptic number.

It is an amenable number.

2151013 is a deficient number, since it is larger than the sum of its proper divisors (1).

2151013 is an equidigital number, since it uses as much as digits as its factorization.

2151013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30, while the sum is 13.

The square root of 2151013 is about 1466.6332193156. The cubic root of 2151013 is about 129.0865552955.

Adding to 2151013 its reverse (3101512), we get a palindrome (5252525).

The spelling of 2151013 in words is "two million, one hundred fifty-one thousand, thirteen".