5251522447 has 4 divisors (see below), whose sum is σ = 5373650920. Its totient is φ = 5129393976.

The previous prime is 5251522429. The next prime is 5251522453. The reversal of 5251522447 is 7442251525.

5251522447 is nontrivially palindromic in base 9.

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

It is not a de Polignac number, because 5251522447 - 2⁷ = 5251522319 is a prime.

It is a super-2 number, since 2×5251522447² = 55156976022689735618, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5251522457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61064172 + ... + 61064257.

It is an arithmetic number, because the mean of its divisors is an integer number (1343412730).

Almost surely, 2^5251522447 is an apocalyptic number.

5251522447 is a deficient number, since it is larger than the sum of its proper divisors (122128473).

5251522447 is a wasteful number, since it uses less digits than its factorization.

5251522447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122128472.

The product of its digits is 112000, while the sum is 37.

The square root of 5251522447 is about 72467.3888518139. The cubic root of 5251522447 is about 1738.1813083122.

The spelling of 5251522447 in words is "five billion, two hundred fifty-one million, five hundred twenty-two thousand, four hundred forty-seven".