7220523 has 8 divisors (see below), whose sum is σ = 9771328. Its totient is φ = 4741704.

The previous prime is 7220519. The next prime is 7220531. The reversal of 7220523 is 3250227.

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

It is not a de Polignac number, because 7220523 - 2² = 7220519 is a prime.

It is a d-powerful number, because it can be written as 7⁸ + 2⁷ + 2¹⁴ + 0 + 5⁸ + 2²⁰ + 3² .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7220523.

It is not an unprimeable number, because it can be changed into a prime (7220573) 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 7 ways as a sum of consecutive naturals, for example, 17761 + ... + 18162.

It is an arithmetic number, because the mean of its divisors is an integer number (1221416).

Almost surely, 2^7220523 is an apocalyptic number.

7220523 is a deficient number, since it is larger than the sum of its proper divisors (2550805).

7220523 is a wasteful number, since it uses less digits than its factorization.

7220523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35993.

The product of its (nonzero) digits is 840, while the sum is 21.

The square root of 7220523 is about 2687.1030869693. The cubic root of 7220523 is about 193.2811726771.

The spelling of 7220523 in words is "seven million, two hundred twenty thousand, five hundred twenty-three".