5251155555 has 8 divisors (see below), whose sum is σ = 8401848912. Its totient is φ = 2800616288.

The previous prime is 5251155521. The next prime is 5251155557. The reversal of 5251155555 is 5555511525.

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 5251155555 - 2¹⁵ = 5251122787 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5251155557) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 175038504 + ... + 175038533.

It is an arithmetic number, because the mean of its divisors is an integer number (1050231114).

Almost surely, 2^5251155555 is an apocalyptic number.

5251155555 is a deficient number, since it is larger than the sum of its proper divisors (3150693357).

5251155555 is a wasteful number, since it uses less digits than its factorization.

5251155555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350077045.

The product of its digits is 156250, while the sum is 39.

The square root of 5251155555 is about 72464.8573792842. The cubic root of 5251155555 is about 1738.1408286433.

The spelling of 5251155555 in words is "five billion, two hundred fifty-one million, one hundred fifty-five thousand, five hundred fifty-five".