2151473 has 2 divisors, whose sum is σ = 2151474. Its totient is φ = 2151472.

The previous prime is 2151467. The next prime is 2151497. The reversal of 2151473 is 3741512.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1317904 + 833569 = 1148^2 + 913^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2151473 is a prime.

It is not a weakly prime, because it can be changed into another prime (2151403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1075736 + 1075737.

It is an arithmetic number, because the mean of its divisors is an integer number (1075737).

2^2151473 is an apocalyptic number.

It is an amenable number.

2151473 is a deficient number, since it is larger than the sum of its proper divisors (1).

2151473 is an equidigital number, since it uses as much as digits as its factorization.

2151473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 840, while the sum is 23.

The square root of 2151473 is about 1466.7900326904. The cubic root of 2151473 is about 129.0957564770.

Adding to 2151473 its reverse (3741512), we get a palindrome (5892985).

The spelling of 2151473 in words is "two million, one hundred fifty-one thousand, four hundred seventy-three".