7215172 has 12 divisors (see below), whose sum is σ = 12661740. Its totient is φ = 3597536.

The previous prime is 7215167. The next prime is 7215179. The reversal of 7215172 is 2715127.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1758276 + 5456896 = 1326^2 + 2336^2 .

It is not an unprimeable number, because it can be changed into a prime (7215179) 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, 763 + ... + 3874.

It is an arithmetic number, because the mean of its divisors is an integer number (1055145).

Almost surely, 2^7215172 is an apocalyptic number.

It is an amenable number.

7215172 is a deficient number, since it is larger than the sum of its proper divisors (5446568).

7215172 is a wasteful number, since it uses less digits than its factorization.

7215172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5030 (or 5028 counting only the distinct ones).

The product of its digits is 980, while the sum is 25.

The square root of 7215172 is about 2686.1072204959. The cubic root of 7215172 is about 193.2334151417.

The spelling of 7215172 in words is "seven million, two hundred fifteen thousand, one hundred seventy-two".