2151533 has 2 divisors, whose sum is σ = 2151534. Its totient is φ = 2151532.

The previous prime is 2151521. The next prime is 2151563. The reversal of 2151533 is 3351512.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1857769 + 293764 = 1363^2 + 542^2 .

It is a cyclic number.

It is not a de Polignac number, because 2151533 - 2⁴ = 2151517 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2151563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1075766 + 1075767.

It is an arithmetic number, because the mean of its divisors is an integer number (1075767).

2^2151533 is an apocalyptic number.

It is an amenable number.

2151533 is a deficient number, since it is larger than the sum of its proper divisors (1).

2151533 is an equidigital number, since it uses as much as digits as its factorization.

2151533 is an evil number, because the sum of its binary digits is even.

The product of its digits is 450, while the sum is 20.

The square root of 2151533 is about 1466.8104853729. The cubic root of 2151533 is about 129.0969565344.

The spelling of 2151533 in words is "two million, one hundred fifty-one thousand, five hundred thirty-three".