7220535 has 16 divisors (see below), whose sum is σ = 13203456. Its totient is φ = 3300768.

The previous prime is 7220531. The next prime is 7220557. The reversal of 7220535 is 5350227.

It is not a de Polignac number, because 7220535 - 2² = 7220531 is a prime.

It is a super-2 number, since 2×7220535² = 104272251372450, which contains 22 as substring.

7220535 is a lucky number.

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 15 ways as a sum of consecutive naturals, for example, 34279 + ... + 34488.

It is an arithmetic number, because the mean of its divisors is an integer number (825216).

Almost surely, 2^7220535 is an apocalyptic number.

7220535 is a deficient number, since it is larger than the sum of its proper divisors (5982921).

7220535 is a wasteful number, since it uses less digits than its factorization.

7220535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68782.

The product of its (nonzero) digits is 2100, while the sum is 24.

The square root of 7220535 is about 2687.1053198563. The cubic root of 7220535 is about 193.2812797502.

The spelling of 7220535 in words is "seven million, two hundred twenty thousand, five hundred thirty-five".