2520913 has 8 divisors (see below), whose sum is σ = 2684232. Its totient is φ = 2359296.

The previous prime is 2520907. The next prime is 2520929. The reversal of 2520913 is 3190252.

It can be written as a sum of positive squares in 4 ways, for example, as 2226064 + 294849 = 1492^2 + 543^2 .

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

It is a 5-Lehmer number, since φ(2520913) divides (2520913-1)⁵.

It is a cyclic number.

It is not a de Polignac number, because 2520913 - 2¹³ = 2512721 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2520943) 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, 4081 + ... + 4657.

It is an arithmetic number, because the mean of its divisors is an integer number (335529).

2^2520913 is an apocalyptic number.

It is an amenable number.

2520913 is a deficient number, since it is larger than the sum of its proper divisors (163319).

2520913 is a wasteful number, since it uses less digits than its factorization.

2520913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 851.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 2520913 is about 1587.7383285668. The cubic root of 2520913 is about 136.0982745572.

The spelling of 2520913 in words is "two million, five hundred twenty thousand, nine hundred thirteen".