4990521 has 8 divisors (see below), whose sum is σ = 7004320. Its totient is φ = 3151872.

The previous prime is 4990501. The next prime is 4990529. The reversal of 4990521 is 1250994.

4990521 = T₁₅₁ + T₁₅₂ + ... + T₃₂₁.

It is a happy number.

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

It is not a de Polignac number, because 4990521 - 2⁷ = 4990393 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4990529) 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, 43720 + ... + 43833.

It is an arithmetic number, because the mean of its divisors is an integer number (875540).

Almost surely, 2^4990521 is an apocalyptic number.

It is an amenable number.

4990521 is a deficient number, since it is larger than the sum of its proper divisors (2013799).

4990521 is a wasteful number, since it uses less digits than its factorization.

4990521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87575.

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 4990521 is about 2233.9474031409. The cubic root of 4990521 is about 170.8894672295.

The spelling of 4990521 in words is "four million, nine hundred ninety thousand, five hundred twenty-one".