7541021 has 2 divisors, whose sum is σ = 7541022. Its totient is φ = 7541020.

The previous prime is 7540997. The next prime is 7541041. The reversal of 7541021 is 1201457.

It is an a-pointer prime, because the next prime (7541041) can be obtained adding 7541021 to its sum of digits (20).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4044121 + 3496900 = 2011^2 + 1870^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7541021 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 7540984 and 7541002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7541041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3770510 + 3770511.

It is an arithmetic number, because the mean of its divisors is an integer number (3770511).

Almost surely, 2^7541021 is an apocalyptic number.

It is an amenable number.

7541021 is a deficient number, since it is larger than the sum of its proper divisors (1).

7541021 is an equidigital number, since it uses as much as digits as its factorization.

7541021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 280, while the sum is 20.

The square root of 7541021 is about 2746.0919503906. The cubic root of 7541021 is about 196.0996040320.

Adding to 7541021 its reverse (1201457), we get a palindrome (8742478).

The spelling of 7541021 in words is "seven million, five hundred forty-one thousand, twenty-one".