5215655 has 4 divisors (see below), whose sum is σ = 6258792. Its totient is φ = 4172520.

The previous prime is 5215649. The next prime is 5215663. The reversal of 5215655 is 5565125.

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

It is a de Polignac number, because none of the positive numbers 2^k-5215655 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, 521561 + ... + 521570.

It is an arithmetic number, because the mean of its divisors is an integer number (1564698).

Almost surely, 2^5215655 is an apocalyptic number.

5215655 is a deficient number, since it is larger than the sum of its proper divisors (1043137).

5215655 is a wasteful number, since it uses less digits than its factorization.

5215655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1043136.

The product of its digits is 7500, while the sum is 29.

The square root of 5215655 is about 2283.7808563871. The cubic root of 5215655 is about 173.4215055185.

The spelling of 5215655 in words is "five million, two hundred fifteen thousand, six hundred fifty-five".