5251135545 has 24 divisors (see below), whose sum is σ = 9581020800. Its totient is φ = 2653204896.

The previous prime is 5251135471. The next prime is 5251135553. The reversal of 5251135545 is 5455311525.

5251135545 is a `hidden beast` number, since 52 + 51 + 1 + 3 + 554 + 5 = 666.

It is not a de Polignac number, because 5251135545 - 2¹⁴ = 5251119161 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3069985 + ... + 3071694.

It is an arithmetic number, because the mean of its divisors is an integer number (399209200).

Almost surely, 2^5251135545 is an apocalyptic number.

It is an amenable number.

5251135545 is a deficient number, since it is larger than the sum of its proper divisors (4329885255).

5251135545 is a wasteful number, since it uses less digits than its factorization.

5251135545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6141709 (or 6141706 counting only the distinct ones).

The product of its digits is 75000, while the sum is 36.

The square root of 5251135545 is about 72464.7193122281. The cubic root of 5251135545 is about 1738.1386208599.

The spelling of 5251135545 in words is "five billion, two hundred fifty-one million, one hundred thirty-five thousand, five hundred forty-five".