7210961 has 4 divisors (see below), whose sum is σ = 7241124. Its totient is φ = 7180800.

The previous prime is 7210949. The next prime is 7210963. The reversal of 7210961 is 1690127.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5017600 + 2193361 = 2240^2 + 1481^2 .

It is a cyclic number.

It is not a de Polignac number, because 7210961 - 2⁶ = 7210897 is a prime.

It is an alternating number because its digits alternate between odd and even.

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 7210961.

It is not an unprimeable number, because it can be changed into a prime (7210963) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14720 + ... + 15201.

It is an arithmetic number, because the mean of its divisors is an integer number (1810281).

Almost surely, 2^7210961 is an apocalyptic number.

It is an amenable number.

7210961 is a deficient number, since it is larger than the sum of its proper divisors (30163).

7210961 is a wasteful number, since it uses less digits than its factorization.

7210961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30162.

The product of its (nonzero) digits is 756, while the sum is 26.

The square root of 7210961 is about 2685.3232580082. The cubic root of 7210961 is about 193.1958154715.

The spelling of 7210961 in words is "seven million, two hundred ten thousand, nine hundred sixty-one".