5528991 has 8 divisors (see below), whose sum is σ = 7939120. Its totient is φ = 3402432.

The previous prime is 5528989. The next prime is 5529001. The reversal of 5528991 is 1998255.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 5528991 - 2¹ = 5528989 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 141769 = 5528991 / (5 + 5 + 2 + 8 + 9 + 9 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5528921) 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, 70846 + ... + 70923.

It is an arithmetic number, because the mean of its divisors is an integer number (992390).

Almost surely, 2^5528991 is an apocalyptic number.

5528991 is a deficient number, since it is larger than the sum of its proper divisors (2410129).

5528991 is a wasteful number, since it uses less digits than its factorization.

5528991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141785.

The product of its digits is 32400, while the sum is 39.

The square root of 5528991 is about 2351.3806582517. The cubic root of 5528991 is about 176.8270198701.

The spelling of 5528991 in words is "five million, five hundred twenty-eight thousand, nine hundred ninety-one".