5611551 has 8 divisors (see below), whose sum is σ = 8162304. Its totient is φ = 3400920.

The previous prime is 5611519. The next prime is 5611553. The reversal of 5611551 is 1551165.

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

It is not a de Polignac number, because 5611551 - 2⁵ = 5611519 is a prime.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5611553) 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, 84991 + ... + 85056.

It is an arithmetic number, because the mean of its divisors is an integer number (1020288).

Almost surely, 2^5611551 is an apocalyptic number.

5611551 is a deficient number, since it is larger than the sum of its proper divisors (2550753).

5611551 is a wasteful number, since it uses less digits than its factorization.

5611551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170061.

The product of its digits is 750, while the sum is 24.

The square root of 5611551 is about 2368.8712501949. The cubic root of 5611551 is about 177.7028138659.

It can be divided in two parts, 561 and 1551, that added together give a palindrome (2112).

The spelling of 5611551 in words is "five million, six hundred eleven thousand, five hundred fifty-one".