5312660081 has 4 divisors (see below), whose sum is σ = 5335859700. Its totient is φ = 5289460464.

The previous prime is 5312660077. The next prime is 5312660107. The reversal of 5312660081 is 1800662135.

It is a happy number.

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 4497043600 + 815616481 = 67060^2 + 28559^2 .

It is a cyclic number.

It is not a de Polignac number, because 5312660081 - 2² = 5312660077 is a prime.

It is a super-2 number, since 2×5312660081² = 56448714272501853122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5312665081) 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, 11599466 + ... + 11599923.

It is an arithmetic number, because the mean of its divisors is an integer number (1333964925).

Almost surely, 2^5312660081 is an apocalyptic number.

It is an amenable number.

5312660081 is a deficient number, since it is larger than the sum of its proper divisors (23199619).

5312660081 is a wasteful number, since it uses less digits than its factorization.

5312660081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23199618.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 5312660081 is about 72887.9968238941. The cubic root of 5312660081 is about 1744.9005376762.

The spelling of 5312660081 in words is "five billion, three hundred twelve million, six hundred sixty thousand, eighty-one".