2521465 has 8 divisors (see below), whose sum is σ = 3056328. Its totient is φ = 1996800.

The previous prime is 2521451. The next prime is 2521469. The reversal of 2521465 is 5641252.

It can be written as a sum of positive squares in 4 ways, for example, as 660969 + 1860496 = 813^2 + 1364^2 .

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

It is not a de Polignac number, because 2521465 - 2²¹ = 424313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2521469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1992 + ... + 3001.

It is an arithmetic number, because the mean of its divisors is an integer number (382041).

2^2521465 is an apocalyptic number.

It is an amenable number.

2521465 is a deficient number, since it is larger than the sum of its proper divisors (534863).

2521465 is a wasteful number, since it uses less digits than its factorization.

2521465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5099.

The product of its digits is 2400, while the sum is 25.

The square root of 2521465 is about 1587.9121512225. The cubic root of 2521465 is about 136.1082075676.

The spelling of 2521465 in words is "two million, five hundred twenty-one thousand, four hundred sixty-five".