4791521 has 8 divisors (see below), whose sum is σ = 5714304. Its totient is φ = 3928320.

The previous prime is 4791517. The next prime is 4791557. The reversal of 4791521 is 1251974.

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 4791521 - 2² = 4791517 is a prime.

It is a d-powerful number, because it can be written as 4⁶ + 7⁴ + 9⁷ + 1 + 5 + 2¹¹ + 1 .

It is not an unprimeable number, because it can be changed into a prime (4791511) 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, 14720 + ... + 15041.

It is an arithmetic number, because the mean of its divisors is an integer number (714288).

Almost surely, 2^4791521 is an apocalyptic number.

It is an amenable number.

4791521 is a deficient number, since it is larger than the sum of its proper divisors (922783).

4791521 is a wasteful number, since it uses less digits than its factorization.

4791521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29791.

The product of its digits is 2520, while the sum is 29.

The square root of 4791521 is about 2188.9543165630. The cubic root of 4791521 is about 168.5871486072.

The spelling of 4791521 in words is "four million, seven hundred ninety-one thousand, five hundred twenty-one".