5220145 has 32 divisors (see below), whose sum is σ = 7660800. Its totient is φ = 3338496.

The previous prime is 5220113. The next prime is 5220151. The reversal of 5220145 is 5410225.

5220145 = 718² + 719² + ... + 727².

It is not a de Polignac number, because 5220145 - 2⁵ = 5220113 is a prime.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 37486 + ... + 37624.

It is an arithmetic number, because the mean of its divisors is an integer number (239400).

Almost surely, 2^5220145 is an apocalyptic number.

It is an amenable number.

5220145 is a deficient number, since it is larger than the sum of its proper divisors (2440655).

5220145 is a wasteful number, since it uses less digits than its factorization.

5220145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217.

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 5220145 is about 2284.7636639268. The cubic root of 5220145 is about 173.4712556921.

It can be divided in two parts, 5220 and 145, that multiplied together give a square (756900 = 870²).

The spelling of 5220145 in words is "five million, two hundred twenty thousand, one hundred forty-five".