2152729 has 2 divisors, whose sum is σ = 2152730. Its totient is φ = 2152728.

The previous prime is 2152691. The next prime is 2152739. The reversal of 2152729 is 9272512.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1567504 + 585225 = 1252^2 + 765^2 .

It is a cyclic number.

It is not a de Polignac number, because 2152729 - 2¹³ = 2144537 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2152697 and 2152706.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2152739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1076364 + 1076365.

It is an arithmetic number, because the mean of its divisors is an integer number (1076365).

2^2152729 is an apocalyptic number.

It is an amenable number.

2152729 is a deficient number, since it is larger than the sum of its proper divisors (1).

2152729 is an equidigital number, since it uses as much as digits as its factorization.

2152729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2520, while the sum is 28.

The square root of 2152729 is about 1467.2181160277. The cubic root of 2152729 is about 129.1208730255.

The spelling of 2152729 in words is "two million, one hundred fifty-two thousand, seven hundred twenty-nine".