7552021 has 2 divisors, whose sum is σ = 7552022. Its totient is φ = 7552020.

The previous prime is 7552001. The next prime is 7552031. The reversal of 7552021 is 1202557.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7349521 + 202500 = 2711^2 + 450^2 .

It is a cyclic number.

It is not a de Polignac number, because 7552021 - 2⁵ = 7551989 is a prime.

7552021 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 7551983 and 7552001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7552001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3776010 + 3776011.

It is an arithmetic number, because the mean of its divisors is an integer number (3776011).

Almost surely, 2^7552021 is an apocalyptic number.

It is an amenable number.

7552021 is a deficient number, since it is larger than the sum of its proper divisors (1).

7552021 is an equidigital number, since it uses as much as digits as its factorization.

7552021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 700, while the sum is 22.

The square root of 7552021 is about 2748.0940668034. The cubic root of 7552021 is about 196.1949071150.

Adding to 7552021 its reverse (1202557), we get a palindrome (8754578).

The spelling of 7552021 in words is "seven million, five hundred fifty-two thousand, twenty-one".