4861521 has 12 divisors (see below), whose sum is σ = 8025472. Its totient is φ = 2777976.

The previous prime is 4861501. The next prime is 4861529. The reversal of 4861521 is 1251684.

4861521 is a `hidden beast` number, since 48 + 615 + 2 + 1 = 666.

It is not a de Polignac number, because 4861521 - 2¹⁹ = 4337233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4861529) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38521 + ... + 38646.

Almost surely, 2^4861521 is an apocalyptic number.

It is an amenable number.

4861521 is a deficient number, since it is larger than the sum of its proper divisors (3163951).

4861521 is a wasteful number, since it uses less digits than its factorization.

4861521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77180 (or 77177 counting only the distinct ones).

The product of its digits is 1920, while the sum is 27.

The square root of 4861521 is about 2204.8857113238. The cubic root of 4861521 is about 169.4041539209.

The spelling of 4861521 in words is "four million, eight hundred sixty-one thousand, five hundred twenty-one".