5215551 has 8 divisors (see below), whose sum is σ = 7586304. Its totient is φ = 3160920.

The previous prime is 5215547. The next prime is 5215559. The reversal of 5215551 is 1555125.

5215551 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 5215551 - 2² = 5215547 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5215559) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78991 + ... + 79056.

It is an arithmetic number, because the mean of its divisors is an integer number (948288).

Almost surely, 2^5215551 is an apocalyptic number.

5215551 is a deficient number, since it is larger than the sum of its proper divisors (2370753).

5215551 is a wasteful number, since it uses less digits than its factorization.

5215551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158061.

The product of its digits is 1250, while the sum is 24.

The square root of 5215551 is about 2283.7580870136. The cubic root of 5215551 is about 173.4203528377.

The spelling of 5215551 in words is "five million, two hundred fifteen thousand, five hundred fifty-one".