5251270051 has 4 divisors (see below), whose sum is σ = 5350350672. Its totient is φ = 5152189432.

The previous prime is 5251269997. The next prime is 5251270081. The reversal of 5251270051 is 1500721525.

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 5251270051 - 2¹⁷ = 5251138979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5251270081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49540231 + ... + 49540336.

It is an arithmetic number, because the mean of its divisors is an integer number (1337587668).

Almost surely, 2^5251270051 is an apocalyptic number.

5251270051 is a deficient number, since it is larger than the sum of its proper divisors (99080621).

5251270051 is an equidigital number, since it uses as much as digits as its factorization.

5251270051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99080620.

The product of its (nonzero) digits is 3500, while the sum is 28.

The square root of 5251270051 is about 72465.6473855026. The cubic root of 5251270051 is about 1738.1534613375.

Adding to 5251270051 its reverse (1500721525), we get a palindrome (6751991576).

The spelling of 5251270051 in words is "five billion, two hundred fifty-one million, two hundred seventy thousand, fifty-one".