4515981 has 8 divisors (see below), whose sum is σ = 6283200. Its totient is φ = 2879712.

The previous prime is 4515943. The next prime is 4515997. The reversal of 4515981 is 1895154.

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

It is not a de Polignac number, because 4515981 - 2¹¹ = 4513933 is a prime.

It is a super-2 number, since 2×4515981² = 40788168784722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4515941) 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, 32656 + ... + 32793.

It is an arithmetic number, because the mean of its divisors is an integer number (785400).

Almost surely, 2^4515981 is an apocalyptic number.

It is an amenable number.

4515981 is a deficient number, since it is larger than the sum of its proper divisors (1767219).

4515981 is a wasteful number, since it uses less digits than its factorization.

4515981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65475.

The product of its digits is 7200, while the sum is 33.

The square root of 4515981 is about 2125.0837630550. The cubic root of 4515981 is about 165.2915689507.

The spelling of 4515981 in words is "four million, five hundred fifteen thousand, nine hundred eighty-one".