7215479 has 2 divisors, whose sum is σ = 7215480. Its totient is φ = 7215478.

The previous prime is 7215457. The next prime is 7215499. The reversal of 7215479 is 9745127.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7215479 - 2⁸ = 7215223 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7215419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3607739 + 3607740.

It is an arithmetic number, because the mean of its divisors is an integer number (3607740).

Almost surely, 2^7215479 is an apocalyptic number.

7215479 is a deficient number, since it is larger than the sum of its proper divisors (1).

7215479 is an equidigital number, since it uses as much as digits as its factorization.

7215479 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17640, while the sum is 35.

The square root of 7215479 is about 2686.1643657826. The cubic root of 7215479 is about 193.2361557471.

It can be divided in two parts, 72 and 15479, that added together give a palindrome (15551).

The spelling of 7215479 in words is "seven million, two hundred fifteen thousand, four hundred seventy-nine".