5551817 has 4 divisors (see below), whose sum is σ = 5588736. Its totient is φ = 5514900.

The previous prime is 5551807. The next prime is 5551829. The reversal of 5551817 is 7181555.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7181555 = 5 ⋅1436311.

It is a cyclic number.

It is not a de Polignac number, because 5551817 - 2⁴ = 5551801 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5551807) 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, 18233 + ... + 18534.

It is an arithmetic number, because the mean of its divisors is an integer number (1397184).

Almost surely, 2^5551817 is an apocalyptic number.

It is an amenable number.

5551817 is a deficient number, since it is larger than the sum of its proper divisors (36919).

5551817 is a wasteful number, since it uses less digits than its factorization.

5551817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36918.

The product of its digits is 7000, while the sum is 32.

The square root of 5551817 is about 2356.2294030930. The cubic root of 5551817 is about 177.0700245346.

The spelling of 5551817 in words is "five million, five hundred fifty-one thousand, eight hundred seventeen".