2157733 has 2 divisors, whose sum is σ = 2157734. Its totient is φ = 2157732.

The previous prime is 2157731. The next prime is 2157737. The reversal of 2157733 is 3377512.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1979649 + 178084 = 1407^2 + 422^2 .

It is a cyclic number.

It is not a de Polignac number, because 2157733 - 2¹ = 2157731 is a prime.

Together with 2157731, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2157731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1078866 + 1078867.

It is an arithmetic number, because the mean of its divisors is an integer number (1078867).

2^2157733 is an apocalyptic number.

It is an amenable number.

2157733 is a deficient number, since it is larger than the sum of its proper divisors (1).

2157733 is an equidigital number, since it uses as much as digits as its factorization.

2157733 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4410, while the sum is 28.

The square root of 2157733 is about 1468.9223941380. The cubic root of 2157733 is about 129.2208423915.

The spelling of 2157733 in words is "two million, one hundred fifty-seven thousand, seven hundred thirty-three".