5261242145 has 8 divisors (see below), whose sum is σ = 6369362856. Its totient is φ = 4171745536.

The previous prime is 5261242039. The next prime is 5261242171. The reversal of 5261242145 is 5412421625.

It can be written as a sum of positive squares in 4 ways, for example, as 14992384 + 5246249761 = 3872^2 + 72431^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 5261242145 - 2¹⁰ = 5261241121 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4655402 + ... + 4656531.

It is an arithmetic number, because the mean of its divisors is an integer number (796170357).

Almost surely, 2^5261242145 is an apocalyptic number.

It is an amenable number.

5261242145 is a deficient number, since it is larger than the sum of its proper divisors (1108120711).

5261242145 is a wasteful number, since it uses less digits than its factorization.

5261242145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9312051.

The product of its digits is 19200, while the sum is 32.

The square root of 5261242145 is about 72534.4204154138. The cubic root of 5261242145 is about 1739.2530092793.

The spelling of 5261242145 in words is "five billion, two hundred sixty-one million, two hundred forty-two thousand, one hundred forty-five".