5521991254 has 16 divisors (see below), whose sum is σ = 8924600160. Its totient is φ = 2547336960.

The previous prime is 5521991249. The next prime is 5521991257. The reversal of 5521991254 is 4521991255.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 5521991254.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5521991257) 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, 934 + ... + 105094.

It is an arithmetic number, because the mean of its divisors is an integer number (557787510).

Almost surely, 2^5521991254 is an apocalyptic number.

5521991254 is a deficient number, since it is larger than the sum of its proper divisors (3402608906).

5521991254 is a wasteful number, since it uses less digits than its factorization.

5521991254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106215.

The product of its digits is 162000, while the sum is 43.

The square root of 5521991254 is about 74310.1019646723. The cubic root of 5521991254 is about 1767.5236689245.

Subtracting from 5521991254 its reverse (4521991255), we obtain a palindrome (999999999).

The spelling of 5521991254 in words is "five billion, five hundred twenty-one million, nine hundred ninety-one thousand, two hundred fifty-four".