5265134781 has 8 divisors (see below), whose sum is σ = 7025098080. Its totient is φ = 3507630672.

The previous prime is 5265134779. The next prime is 5265134789. The reversal of 5265134781 is 1874315625.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 5265134781 - 2¹ = 5265134779 is a prime.

It is a super-2 number, since 2×5265134781² = 55443288524191835922, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5265134789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 609795 + ... + 618368.

It is an arithmetic number, because the mean of its divisors is an integer number (878137260).

Almost surely, 2^5265134781 is an apocalyptic number.

It is an amenable number.

5265134781 is a deficient number, since it is larger than the sum of its proper divisors (1759963299).

5265134781 is a wasteful number, since it uses less digits than its factorization.

5265134781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1229595.

The product of its digits is 201600, while the sum is 42.

The square root of 5265134781 is about 72561.2484801633. The cubic root of 5265134781 is about 1739.6818439960.

The spelling of 5265134781 in words is "five billion, two hundred sixty-five million, one hundred thirty-four thousand, seven hundred eighty-one".