2520657471 has 4 divisors (see below), whose sum is σ = 3360876632. Its totient is φ = 1680438312.

The previous prime is 2520657457. The next prime is 2520657479. The reversal of 2520657471 is 1747560252.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2520657471 - 2¹⁵ = 2520624703 is a prime.

It is a super-3 number, since 3×2520657471³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2520657479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 420109576 + ... + 420109581.

It is an arithmetic number, because the mean of its divisors is an integer number (840219158).

Almost surely, 2^2520657471 is an apocalyptic number.

2520657471 is a deficient number, since it is larger than the sum of its proper divisors (840219161).

2520657471 is an equidigital number, since it uses as much as digits as its factorization.

2520657471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 840219160.

The product of its (nonzero) digits is 117600, while the sum is 39.

The square root of 2520657471 is about 50206.1497328764. The cubic root of 2520657471 is about 1360.9367592821.

The spelling of 2520657471 in words is "two billion, five hundred twenty million, six hundred fifty-seven thousand, four hundred seventy-one".