5185296081 has 81 divisors (see below), whose sum is σ = 9119152809. Its totient is φ = 2939695416.

The previous prime is 5185296073. The next prime is 5185296097. The reversal of 5185296081 is 1806925815.

It is a happy number.

The square root of 5185296081 is 72009.

It is a perfect power (a square), and thus also a powerful number.

5185296081 is a `hidden beast` number, since 5 + 18 + 5 + 29 + 608 + 1 = 666.

It is a tau number, because it is divible by the number of its divisors (81).

It is not a de Polignac number, because 5185296081 - 2³ = 5185296073 is a prime.

It is a super-2 number, since 2×5185296081² = 53774590895267917122, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (5185296001) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 40829040 + ... + 40829166.

Almost surely, 2^5185296081 is an apocalyptic number.

5185296081 is the 72009-th square number.

5185296081 is the 36005-th centered octagonal number.

It is an amenable number.

5185296081 is a deficient number, since it is larger than the sum of its proper divisors (3933856728).

5185296081 is an frugal number, since it uses more digits than its factorization.

5185296081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292 (or 137 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 45.

The cubic root of 5185296081 is about 1730.8437063214.

The spelling of 5185296081 in words is "five billion, one hundred eighty-five million, two hundred ninety-six thousand, eighty-one".