7220501 has 4 divisors (see below), whose sum is σ = 7262412. Its totient is φ = 7178592.

The previous prime is 7220497. The next prime is 7220519. The reversal of 7220501 is 1050227.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1050227 = 131 ⋅8017.

It can be written as a sum of positive squares in 2 ways, for example, as 6916900 + 303601 = 2630^2 + 551^2 .

It is a cyclic number.

It is not a de Polignac number, because 7220501 - 2² = 7220497 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 7220501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7220531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20696 + ... + 21041.

It is an arithmetic number, because the mean of its divisors is an integer number (1815603).

Almost surely, 2^7220501 is an apocalyptic number.

It is an amenable number.

7220501 is a deficient number, since it is larger than the sum of its proper divisors (41911).

7220501 is a wasteful number, since it uses less digits than its factorization.

7220501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41910.

The product of its (nonzero) digits is 140, while the sum is 17.

The square root of 7220501 is about 2687.0989933384. The cubic root of 7220501 is about 193.2809763760.

Adding to 7220501 its reverse (1050227), we get a palindrome (8270728).

The spelling of 7220501 in words is "seven million, two hundred twenty thousand, five hundred one".