5551690 has 32 divisors (see below), whose sum is σ = 10711440. Its totient is φ = 2071552.

The previous prime is 5551669. The next prime is 5551699. The reversal of 5551690 is 961555.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 1002001 + 4549689 = 1001^2 + 2133^2 .

It is a super-3 number, since 3×5551690³ (a number of 21 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (5551699) 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 15 ways as a sum of consecutive naturals, for example, 49074 + ... + 49186.

Almost surely, 2^5551690 is an apocalyptic number.

5551690 is a deficient number, since it is larger than the sum of its proper divisors (5159750).

5551690 is a wasteful number, since it uses less digits than its factorization.

5551690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171 (or 137 counting only the distinct ones).

The product of its (nonzero) digits is 6750, while the sum is 31.

The square root of 5551690 is about 2356.2024531012. The cubic root of 5551690 is about 177.0686743421.

It can be divided in two parts, 5551 and 690, that added together give a square (6241 = 79²).

The spelling of 5551690 in words is "five million, five hundred fifty-one thousand, six hundred ninety".