7447272461 has 4 divisors (see below), whose sum is σ = 7501632252. Its totient is φ = 7392912672.

The previous prime is 7447272449. The next prime is 7447272487. The reversal of 7447272461 is 1642727447.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2576070025 + 4871202436 = 50755^2 + 69794^2 .

It is a cyclic number.

It is not a de Polignac number, because 7447272461 - 2⁶ = 7447272397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7447262461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27179690 + ... + 27179963.

It is an arithmetic number, because the mean of its divisors is an integer number (1875408063).

Almost surely, 2^7447272461 is an apocalyptic number.

It is an amenable number.

7447272461 is a deficient number, since it is larger than the sum of its proper divisors (54359791).

7447272461 is a wasteful number, since it uses less digits than its factorization.

7447272461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54359790.

The product of its digits is 526848, while the sum is 44.

The square root of 7447272461 is about 86297.5808525361. The cubic root of 7447272461 is about 1952.8358878783.

The spelling of 7447272461 in words is "seven billion, four hundred forty-seven million, two hundred seventy-two thousand, four hundred sixty-one".