2152961 has 4 divisors (see below), whose sum is σ = 2246592. Its totient is φ = 2059332.

The previous prime is 2152957. The next prime is 2152973. The reversal of 2152961 is 1692512.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2152961 - 2² = 2152957 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2152961.

It is not an unprimeable number, because it can be changed into a prime (2152921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46781 + ... + 46826.

It is an arithmetic number, because the mean of its divisors is an integer number (561648).

2^2152961 is an apocalyptic number.

It is an amenable number.

2152961 is a deficient number, since it is larger than the sum of its proper divisors (93631).

2152961 is an equidigital number, since it uses as much as digits as its factorization.

2152961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93630.

The product of its digits is 1080, while the sum is 26.

The square root of 2152961 is about 1467.2971750808. The cubic root of 2152961 is about 129.1255113190.

It can be divided in two parts, 2152 and 961, that added together give a palindrome (3113).

The spelling of 2152961 in words is "two million, one hundred fifty-two thousand, nine hundred sixty-one".