7215473 has 8 divisors (see below), whose sum is σ = 7425000. Its totient is φ = 7008768.

The previous prime is 7215457. The next prime is 7215479. The reversal of 7215473 is 3745127.

It can be written as a sum of positive squares in 4 ways, for example, as 2053489 + 5161984 = 1433^2 + 2272^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7215473 - 2⁴ = 7215457 is a prime.

It is a super-2 number, since 2×7215473² = 104126101227458, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (7215479) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5153 + ... + 6401.

It is an arithmetic number, because the mean of its divisors is an integer number (928125).

Almost surely, 2^7215473 is an apocalyptic number.

It is an amenable number.

7215473 is a deficient number, since it is larger than the sum of its proper divisors (209527).

7215473 is a wasteful number, since it uses less digits than its factorization.

7215473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1411.

The product of its digits is 5880, while the sum is 29.

The square root of 7215473 is about 2686.1632489482. The cubic root of 7215473 is about 193.2361021855.

It can be divided in two parts, 72154 and 73, that added together give a palindrome (72227).

The spelling of 7215473 in words is "seven million, two hundred fifteen thousand, four hundred seventy-three".