5551511 has 8 divisors (see below), whose sum is σ = 6549504. Its totient is φ = 4604760.

The previous prime is 5551501. The next prime is 5551529. The reversal of 5551511 is 1151555.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5551511 is a prime.

It is a super-3 number, since 3×5551511³ (a number of 21 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5551501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12575 + ... + 13008.

It is an arithmetic number, because the mean of its divisors is an integer number (818688).

Almost surely, 2^5551511 is an apocalyptic number.

5551511 is a deficient number, since it is larger than the sum of its proper divisors (997993).

5551511 is a wasteful number, since it uses less digits than its factorization.

5551511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25621.

The product of its digits is 625, while the sum is 23.

The square root of 5551511 is about 2356.1644679436. The cubic root of 5551511 is about 177.0667712800.

The spelling of 5551511 in words is "five million, five hundred fifty-one thousand, five hundred eleven".