7255545 has 16 divisors (see below), whose sum is σ = 12664512. Its totient is φ = 3517760.

The previous prime is 7255529. The next prime is 7255609. The reversal of 7255545 is 5455527.

It is not a de Polignac number, because 7255545 - 2⁴ = 7255529 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a d-powerful number, because it can be written as 7⁸ + 2¹⁵ + 5² + 5⁵ + 5⁶ + 4¹⁰ + 5⁸ .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21822 + ... + 22151.

It is an arithmetic number, because the mean of its divisors is an integer number (791532).

Almost surely, 2^7255545 is an apocalyptic number.

It is an amenable number.

7255545 is a deficient number, since it is larger than the sum of its proper divisors (5408967).

7255545 is a wasteful number, since it uses less digits than its factorization.

7255545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43992.

The product of its digits is 35000, while the sum is 33.

The square root of 7255545 is about 2693.6118874107. The cubic root of 7255545 is about 193.5931620112.

It can be divided in two parts, 7 and 255545, that added together give a palindrome (255552).

The spelling of 7255545 in words is "seven million, two hundred fifty-five thousand, five hundred forty-five".