7522257 has 8 divisors (see below), whose sum is σ = 10042560. Its totient is φ = 5008400.

The previous prime is 7522241. The next prime is 7522261.

7522257 is nontrivially palindromic in base 10.

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

It is a cyclic number.

It is not a de Polignac number, because 7522257 - 2⁴ = 7522241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7522217) 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, 3007 + ... + 4907.

It is an arithmetic number, because the mean of its divisors is an integer number (1255320).

Almost surely, 2^7522257 is an apocalyptic number.

It is an amenable number.

7522257 is a deficient number, since it is larger than the sum of its proper divisors (2520303).

7522257 is a wasteful number, since it uses less digits than its factorization.

7522257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3223.

The product of its digits is 9800, while the sum is 30.

The square root of 7522257 is about 2742.6733308945. The cubic root of 7522257 is about 195.9368201890.

The spelling of 7522257 in words is "seven million, five hundred twenty-two thousand, two hundred fifty-seven".