7155479 has 2 divisors, whose sum is σ = 7155480. Its totient is φ = 7155478.

The previous prime is 7155439. The next prime is 7155503. The reversal of 7155479 is 9745517.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7155479 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7155409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3577739 + 3577740.

It is an arithmetic number, because the mean of its divisors is an integer number (3577740).

Almost surely, 2^7155479 is an apocalyptic number.

7155479 is a deficient number, since it is larger than the sum of its proper divisors (1).

7155479 is an equidigital number, since it uses as much as digits as its factorization.

7155479 is an evil number, because the sum of its binary digits is even.

The product of its digits is 44100, while the sum is 38.

The square root of 7155479 is about 2674.9727101412. The cubic root of 7155479 is about 192.6990486208.

Adding to 7155479 its sum of digits (38), we get a palindrome (7155517).

The spelling of 7155479 in words is "seven million, one hundred fifty-five thousand, four hundred seventy-nine".