5521250551 has 4 divisors (see below), whose sum is σ = 5524830352. Its totient is φ = 5517670752.

The previous prime is 5521250543. The next prime is 5521250587. The reversal of 5521250551 is 1550521255.

5521250551 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1550521255 = 5 ⋅310104251.

It is a cyclic number.

It is not a de Polignac number, because 5521250551 - 2³ = 5521250543 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 (5521250591) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1787586 + ... + 1790671.

It is an arithmetic number, because the mean of its divisors is an integer number (1381207588).

Almost surely, 2^5521250551 is an apocalyptic number.

5521250551 is a deficient number, since it is larger than the sum of its proper divisors (3579801).

5521250551 is a wasteful number, since it uses less digits than its factorization.

5521250551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3579800.

The product of its (nonzero) digits is 12500, while the sum is 31.

The square root of 5521250551 is about 74305.1179327508. The cubic root of 5521250551 is about 1767.4446353195. Note that the first 3 decimals are identical.

The spelling of 5521250551 in words is "five billion, five hundred twenty-one million, two hundred fifty thousand, five hundred fifty-one".