6520513454 has 32 divisors (see below), whose sum is σ = 12042024960. Its totient is φ = 2578653792.

The previous prime is 6520513453. The next prime is 6520513457. The reversal of 6520513454 is 4543150256.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6520513453) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 840437 + ... + 848159.

It is an arithmetic number, because the mean of its divisors is an integer number (376313280).

Almost surely, 2^6520513454 is an apocalyptic number.

6520513454 is a deficient number, since it is larger than the sum of its proper divisors (5521511506).

6520513454 is a wasteful number, since it uses less digits than its factorization.

6520513454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12384.

The product of its (nonzero) digits is 72000, while the sum is 35.

The square root of 6520513454 is about 80749.6963090265. The cubic root of 6520513454 is about 1868.2167653528.

The spelling of 6520513454 in words is "six billion, five hundred twenty million, five hundred thirteen thousand, four hundred fifty-four".