6515455 has 4 divisors (see below), whose sum is σ = 7818552. Its totient is φ = 5212360.

The previous prime is 6515419. The next prime is 6515473. The reversal of 6515455 is 5545156.

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

It is not a de Polignac number, because 6515455 - 2¹¹ = 6513407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 651541 + ... + 651550.

It is an arithmetic number, because the mean of its divisors is an integer number (1954638).

Almost surely, 2^6515455 is an apocalyptic number.

6515455 is a deficient number, since it is larger than the sum of its proper divisors (1303097).

6515455 is a wasteful number, since it uses less digits than its factorization.

6515455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1303096.

The product of its digits is 15000, while the sum is 31.

The square root of 6515455 is about 2552.5389321223. The cubic root of 6515455 is about 186.7733534829.

Subtracting from 6515455 its reverse (5545156), we obtain a cube (970299 = 99³).

The spelling of 6515455 in words is "six million, five hundred fifteen thousand, four hundred fifty-five".