5551491 has 8 divisors (see below), whose sum is σ = 8074944. Its totient is φ = 3364520.

The previous prime is 5551489. The next prime is 5551501. The reversal of 5551491 is 1941555.

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

It is a cyclic number.

It is not a de Polignac number, because 5551491 - 2¹ = 5551489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5550491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84081 + ... + 84146.

It is an arithmetic number, because the mean of its divisors is an integer number (1009368).

Almost surely, 2^5551491 is an apocalyptic number.

5551491 is a deficient number, since it is larger than the sum of its proper divisors (2523453).

5551491 is a wasteful number, since it uses less digits than its factorization.

5551491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168241.

The product of its digits is 4500, while the sum is 30.

The square root of 5551491 is about 2356.1602237539. The cubic root of 5551491 is about 177.0665586448.

The spelling of 5551491 in words is "five million, five hundred fifty-one thousand, four hundred ninety-one".