7155955 has 4 divisors (see below), whose sum is σ = 8587152. Its totient is φ = 5724760.

The previous prime is 7155943. The next prime is 7155961. The reversal of 7155955 is 5595517.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5595517 = 349 ⋅16033.

It is not a de Polignac number, because 7155955 - 2²¹ = 5058803 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 715591 + ... + 715600.

It is an arithmetic number, because the mean of its divisors is an integer number (2146788).

Almost surely, 2^7155955 is an apocalyptic number.

7155955 is a deficient number, since it is larger than the sum of its proper divisors (1431197).

7155955 is a wasteful number, since it uses less digits than its factorization.

7155955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1431196.

The product of its digits is 39375, while the sum is 37.

The square root of 7155955 is about 2675.0616815318. The cubic root of 7155955 is about 192.7033214637.

It can be divided in two parts, 715 and 5955, that added together give a triangular number (6670 = T₁₁₅).

The spelling of 7155955 in words is "seven million, one hundred fifty-five thousand, nine hundred fifty-five".