6520172 has 12 divisors (see below), whose sum is σ = 11581080. Its totient is φ = 3211296.

The previous prime is 6520153. The next prime is 6520183. The reversal of 6520172 is 2710256.

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, 11897 + ... + 12432.

It is an arithmetic number, because the mean of its divisors is an integer number (965090).

Almost surely, 2^6520172 is an apocalyptic number.

It is an amenable number.

6520172 is a deficient number, since it is larger than the sum of its proper divisors (5060908).

6520172 is a wasteful number, since it uses less digits than its factorization.

6520172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24400 (or 24398 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 6520172 is about 2553.4627469380. The cubic root of 6520172 is about 186.8184154362.

The spelling of 6520172 in words is "six million, five hundred twenty thousand, one hundred seventy-two".