15552225551 has 4 divisors (see below), whose sum is σ = 15552724704. Its totient is φ = 15551726400.

The previous prime is 15552225541. The next prime is 15552225569.

15552225551 is nontrivially palindromic in base 10.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15552225551 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15552225541) 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, 199490 + ... + 266271.

It is an arithmetic number, because the mean of its divisors is an integer number (3888181176).

Almost surely, 2^15552225551 is an apocalyptic number.

15552225551 is a deficient number, since it is larger than the sum of its proper divisors (499153).

15552225551 is an equidigital number, since it uses as much as digits as its factorization.

15552225551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499152.

The product of its digits is 125000, while the sum is 38.

The spelling of 15552225551 in words is "fifteen billion, five hundred fifty-two million, two hundred twenty-five thousand, five hundred fifty-one".