7455 has 16 divisors (see below), whose sum is σ = 13824. Its totient is φ = 3360.

The previous prime is 7451. The next prime is 7457. The reversal of 7455 is 5547.

It is not a de Polignac number, because 7455 - 2² = 7451 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a plaindrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7451) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70 + ... + 140.

It is an arithmetic number, because the mean of its divisors is an integer number (864).

2⁷⁴⁵⁵ is an apocalyptic number.

7455 is a deficient number, since it is larger than the sum of its proper divisors (6369).

7455 is a wasteful number, since it uses less digits than its factorization.

7455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86.

The product of its digits is 700, while the sum is 21.

The square root of 7455 is about 86.3423418723. The cubic root of 7455 is about 19.5351109700.

The spelling of 7455 in words is "seven thousand, four hundred fifty-five".