4912521 has 16 divisors (see below), whose sum is σ = 6726720. Its totient is φ = 3188160.

The previous prime is 4912511. The next prime is 4912529. The reversal of 4912521 is 1252194.

It is not a de Polignac number, because 4912521 - 2⁵ = 4912489 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4912491 and 4912500.

It is not an unprimeable number, because it can be changed into a prime (4912529) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27051 + ... + 27231.

It is an arithmetic number, because the mean of its divisors is an integer number (420420).

Almost surely, 2^4912521 is an apocalyptic number.

It is an amenable number.

4912521 is a deficient number, since it is larger than the sum of its proper divisors (1814199).

4912521 is a wasteful number, since it uses less digits than its factorization.

4912521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376.

The product of its digits is 720, while the sum is 24.

The square root of 4912521 is about 2216.4207633029. The cubic root of 4912521 is about 169.9944750223.

Adding to 4912521 its sum of digits (24), we get a triangular number (4912545 = T₃₁₃₄).

The spelling of 4912521 in words is "four million, nine hundred twelve thousand, five hundred twenty-one".