5215545 has 12 divisors (see below), whose sum is σ = 9040356. Its totient is φ = 2781600.

The previous prime is 5215537. The next prime is 5215547. The reversal of 5215545 is 5455125.

It can be written as a sum of positive squares in 2 ways, for example, as 665856 + 4549689 = 816^2 + 2133^2 .

It is not a de Polignac number, because 5215545 - 2³ = 5215537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5215547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 57906 + ... + 57995.

It is an arithmetic number, because the mean of its divisors is an integer number (753363).

Almost surely, 2^5215545 is an apocalyptic number.

It is an amenable number.

5215545 is a deficient number, since it is larger than the sum of its proper divisors (3824811).

5215545 is a wasteful number, since it uses less digits than its factorization.

5215545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115912 (or 115909 counting only the distinct ones).

The product of its digits is 5000, while the sum is 27.

The square root of 5215545 is about 2283.7567733890. The cubic root of 5215545 is about 173.4202863364.

The spelling of 5215545 in words is "five million, two hundred fifteen thousand, five hundred forty-five".