7215261 has 16 divisors (see below), whose sum is σ = 10233216. Its totient is φ = 4511936.

The previous prime is 7215239. The next prime is 7215277. The reversal of 7215261 is 1625127.

It is a cyclic number.

It is not a de Polignac number, because 7215261 - 2⁷ = 7215133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7215661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2671 + ... + 4643.

It is an arithmetic number, because the mean of its divisors is an integer number (639576).

Almost surely, 2^7215261 is an apocalyptic number.

It is an amenable number.

7215261 is a deficient number, since it is larger than the sum of its proper divisors (3017955).

7215261 is a wasteful number, since it uses less digits than its factorization.

7215261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2052.

The product of its digits is 840, while the sum is 24.

The square root of 7215261 is about 2686.1237871699. The cubic root of 7215261 is about 193.2342096575.

The spelling of 7215261 in words is "seven million, two hundred fifteen thousand, two hundred sixty-one".