7522001 has 4 divisors (see below), whose sum is σ = 7560000. Its totient is φ = 7484004.

The previous prime is 7521979. The next prime is 7522003. The reversal of 7522001 is 1002257.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 7522001 - 2⁶ = 7521937 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7522003) 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, 18701 + ... + 19098.

It is an arithmetic number, because the mean of its divisors is an integer number (1890000).

Almost surely, 2^7522001 is an apocalyptic number.

It is an amenable number.

7522001 is a deficient number, since it is larger than the sum of its proper divisors (37999).

7522001 is a wasteful number, since it uses less digits than its factorization.

7522001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37998.

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

The square root of 7522001 is about 2742.6266607032. The cubic root of 7522001 is about 195.9345974343.

Adding to 7522001 its reverse (1002257), we get a palindrome (8524258).

The spelling of 7522001 in words is "seven million, five hundred twenty-two thousand, one".