7621541 has 2 divisors, whose sum is σ = 7621542. Its totient is φ = 7621540.

The previous prime is 7621517. The next prime is 7621543. The reversal of 7621541 is 1451267.

7621541 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4120900 + 3500641 = 2030^2 + 1871^2 .

It is an emirp because it is prime and its reverse (1451267) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7621541 - 2¹⁸ = 7359397 is a prime.

It is a Sophie Germain prime.

Together with 7621543, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 7621541.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7621543) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3810770 + 3810771.

It is an arithmetic number, because the mean of its divisors is an integer number (3810771).

Almost surely, 2^7621541 is an apocalyptic number.

It is an amenable number.

7621541 is a deficient number, since it is larger than the sum of its proper divisors (1).

7621541 is an equidigital number, since it uses as much as digits as its factorization.

7621541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1680, while the sum is 26.

The square root of 7621541 is about 2760.7138569580. The cubic root of 7621541 is about 196.7950921535.

The spelling of 7621541 in words is "seven million, six hundred twenty-one thousand, five hundred forty-one".