2152739 has 2 divisors, whose sum is σ = 2152740. Its totient is φ = 2152738.

The previous prime is 2152729. The next prime is 2152753. The reversal of 2152739 is 9372512.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2152739 - 2⁸ = 2152483 is a prime.

It is a Sophie Germain prime.

It is a d-powerful number, because it can be written as 2¹⁵ + 1 + 5 + 2²¹ + 7⁴ + 3⁹ + 9³ .

It is not a weakly prime, because it can be changed into another prime (2152729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1076369 + 1076370.

It is an arithmetic number, because the mean of its divisors is an integer number (1076370).

2^2152739 is an apocalyptic number.

2152739 is a deficient number, since it is larger than the sum of its proper divisors (1).

2152739 is an equidigital number, since it uses as much as digits as its factorization.

2152739 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3780, while the sum is 29.

The square root of 2152739 is about 1467.2215238334. The cubic root of 2152739 is about 129.1210729588.

It can be divided in two parts, 215 and 2739, that multiplied together give a palindrome (588885).

The spelling of 2152739 in words is "two million, one hundred fifty-two thousand, seven hundred thirty-nine".