5151556523 has 4 divisors (see below), whose sum is σ = 5162731728. Its totient is φ = 5140381320.

The previous prime is 5151556517. The next prime is 5151556541. The reversal of 5151556523 is 3256551515.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 5151556523 - 2²⁶ = 5084447659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5151556513) 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, 5586911 + ... + 5587832.

It is an arithmetic number, because the mean of its divisors is an integer number (1290682932).

Almost surely, 2^5151556523 is an apocalyptic number.

5151556523 is a deficient number, since it is larger than the sum of its proper divisors (11175205).

5151556523 is a wasteful number, since it uses less digits than its factorization.

5151556523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11175204.

The product of its digits is 112500, while the sum is 38.

The square root of 5151556523 is about 71774.3444623495. The cubic root of 5151556523 is about 1727.0814639317.

The spelling of 5151556523 in words is "five billion, one hundred fifty-one million, five hundred fifty-six thousand, five hundred twenty-three".