7155423 has 12 divisors (see below), whose sum is σ = 11275368. Its totient is φ = 4336560.

The previous prime is 7155413. The next prime is 7155439. The reversal of 7155423 is 3245517.

It is a happy number.

It is not a de Polignac number, because 7155423 - 2⁵ = 7155391 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7155403) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36040 + ... + 36237.

It is an arithmetic number, because the mean of its divisors is an integer number (939614).

Almost surely, 2^7155423 is an apocalyptic number.

7155423 is a deficient number, since it is larger than the sum of its proper divisors (4119945).

7155423 is a wasteful number, since it uses less digits than its factorization.

7155423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72294 (or 72291 counting only the distinct ones).

The product of its digits is 4200, while the sum is 27.

The square root of 7155423 is about 2674.9622427242. The cubic root of 7155423 is about 192.6985459209.

The spelling of 7155423 in words is "seven million, one hundred fifty-five thousand, four hundred twenty-three".