5120649 has 12 divisors (see below), whose sum is σ = 7452276. Its totient is φ = 3388032.

The previous prime is 5120629. The next prime is 5120657. The reversal of 5120649 is 9460215.

5120649 is a `hidden beast` number, since 5 + 12 + 0 + 649 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1140624 + 3980025 = 1068^2 + 1995^2 .

It is not a de Polignac number, because 5120649 - 2²⁰ = 4072073 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (5120629) 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, 844 + ... + 3309.

It is an arithmetic number, because the mean of its divisors is an integer number (621023).

Almost surely, 2^5120649 is an apocalyptic number.

It is an amenable number.

5120649 is a deficient number, since it is larger than the sum of its proper divisors (2331627).

5120649 is a wasteful number, since it uses less digits than its factorization.

5120649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4296 (or 4293 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 5120649 is about 2262.8851053467. The cubic root of 5120649 is about 172.3620573330.

The spelling of 5120649 in words is "five million, one hundred twenty thousand, six hundred forty-nine".