7601521 has 2 divisors, whose sum is σ = 7601522. Its totient is φ = 7601520.

The previous prime is 7601519. The next prime is 7601543. The reversal of 7601521 is 1251067.

It is an a-pointer prime, because the next prime (7601543) can be obtained adding 7601521 to its sum of digits (22).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3857296 + 3744225 = 1964^2 + 1935^2 .

It is a cyclic number.

It is not a de Polignac number, because 7601521 - 2¹ = 7601519 is a prime.

Together with 7601519, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 7601492 and 7601501.

It is not a weakly prime, because it can be changed into another prime (7601621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3800760 + 3800761.

It is an arithmetic number, because the mean of its divisors is an integer number (3800761).

Almost surely, 2^7601521 is an apocalyptic number.

It is an amenable number.

7601521 is a deficient number, since it is larger than the sum of its proper divisors (1).

7601521 is an equidigital number, since it uses as much as digits as its factorization.

7601521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 420, while the sum is 22.

The square root of 7601521 is about 2757.0855989613. The cubic root of 7601521 is about 196.6226295476.

Adding to 7601521 its reverse (1251067), we get a palindrome (8852588).

It can be divided in two parts, 760 and 1521, that multiplied together give a triangular number (1155960 = T₁₅₂₀).

The spelling of 7601521 in words is "seven million, six hundred one thousand, five hundred twenty-one".