4521155 has 8 divisors (see below), whose sum is σ = 5437152. Its totient is φ = 3609088.

The previous prime is 4521151. The next prime is 4521157. The reversal of 4521155 is 5511254.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4521155 - 2² = 4521151 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4521155.

It is not an unprimeable number, because it can be changed into a prime (4521151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3107 + ... + 4323.

It is an arithmetic number, because the mean of its divisors is an integer number (679644).

Almost surely, 2^4521155 is an apocalyptic number.

4521155 is a deficient number, since it is larger than the sum of its proper divisors (915997).

4521155 is a wasteful number, since it uses less digits than its factorization.

4521155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1965.

The product of its digits is 1000, while the sum is 23.

The square root of 4521155 is about 2126.3007783472. The cubic root of 4521155 is about 165.3546702034.

Subtracting 4521155 from its reverse (5511254), we obtain a palindrome (990099).

The spelling of 4521155 in words is "four million, five hundred twenty-one thousand, one hundred fifty-five".