7471461521 has 2 divisors, whose sum is σ = 7471461522. Its totient is φ = 7471461520.

The previous prime is 7471461509. The next prime is 7471461553. The reversal of 7471461521 is 1251641747.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5021706496 + 2449755025 = 70864^2 + 49495^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7471461521 is a prime.

It is not a weakly prime, because it can be changed into another prime (7471461581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3735730760 + 3735730761.

It is an arithmetic number, because the mean of its divisors is an integer number (3735730761).

Almost surely, 2^7471461521 is an apocalyptic number.

It is an amenable number.

7471461521 is a deficient number, since it is larger than the sum of its proper divisors (1).

7471461521 is an equidigital number, since it uses as much as digits as its factorization.

7471461521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 47040, while the sum is 38.

The square root of 7471461521 is about 86437.6163542239. The cubic root of 7471461521 is about 1954.9479010979.

The spelling of 7471461521 in words is "seven billion, four hundred seventy-one million, four hundred sixty-one thousand, five hundred twenty-one".