7615481 has 2 divisors, whose sum is σ = 7615482. Its totient is φ = 7615480.

The previous prime is 7615477. The next prime is 7615483. The reversal of 7615481 is 1845167.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7513081 + 102400 = 2741^2 + 320^2 .

It is an emirp because it is prime and its reverse (1845167) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7615481 - 2² = 7615477 is a prime.

It is a super-2 number, since 2×7615481² = 115991101722722, which contains 22 as substring.

Together with 7615483, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (7615483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3807740 + 3807741.

It is an arithmetic number, because the mean of its divisors is an integer number (3807741).

Almost surely, 2^7615481 is an apocalyptic number.

It is an amenable number.

7615481 is a deficient number, since it is larger than the sum of its proper divisors (1).

7615481 is an equidigital number, since it uses as much as digits as its factorization.

7615481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6720, while the sum is 32.

The square root of 7615481 is about 2759.6160964888. The cubic root of 7615481 is about 196.7429200937.

The spelling of 7615481 in words is "seven million, six hundred fifteen thousand, four hundred eighty-one".