5551959 has 16 divisors (see below), whose sum is σ = 8605440. Its totient is φ = 3118080.

The previous prime is 5551957. The next prime is 5551967. The reversal of 5551959 is 9591555.

It is a happy number.

It is not a de Polignac number, because 5551959 - 2¹ = 5551957 is a prime.

5551959 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5551951) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1002 + ... + 3479.

It is an arithmetic number, because the mean of its divisors is an integer number (537840).

Almost surely, 2^5551959 is an apocalyptic number.

5551959 is a gapful number since it is divisible by the number (59) formed by its first and last digit.

5551959 is a deficient number, since it is larger than the sum of its proper divisors (3053481).

5551959 is a wasteful number, since it uses less digits than its factorization.

5551959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4550.

The product of its digits is 50625, while the sum is 39.

The square root of 5551959 is about 2356.2595357897. The cubic root of 5551959 is about 177.0715341742.

The spelling of 5551959 in words is "five million, five hundred fifty-one thousand, nine hundred fifty-nine".