5551115 has 4 divisors (see below), whose sum is σ = 6661344.
Its totient is φ = 4440888.
The previous prime is 5551111. The next prime is 5551121. The reversal of 5551115 is 5111555.
It is a happy number.
It is a semiprime because it is the product of two primes.
It is a cyclic number.
It is not a de Polignac number, because 5551115 - 22 = 5551111 is a prime.
It is a nude number because it is divisible by every one of its digits.
It is an Ulam number.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (5551111) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 555107 + ... + 555116.
It is an arithmetic number, because the mean of its divisors is an integer number (1665336).
Almost surely, 25551115 is an apocalyptic number.
5551115 is a deficient number, since it is larger than the sum of its proper divisors (1110229).
5551115 is a wasteful number, since it uses less digits than its factorization.
5551115 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1110228.
The product of its digits is 625, while the sum is 23.
The square root of 5551115 is about 2356.0804315643.
The cubic root of 5551115 is about 177.0625610083.
The spelling of 5551115 in words is "five million, five hundred fifty-one thousand, one hundred fifteen".