5551965 has 12 divisors (see below), whose sum is σ = 9623484. Its totient is φ = 2961024.

The previous prime is 5551957. The next prime is 5551967. The reversal of 5551965 is 5691555.

It can be written as a sum of positive squares in 2 ways, for example, as 3426201 + 2125764 = 1851^2 + 1458^2 .

It is not a de Polignac number, because 5551965 - 2³ = 5551957 is a prime.

It is a super-2 number, since 2×5551965² = 61648630722450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5551967) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 61644 + ... + 61733.

It is an arithmetic number, because the mean of its divisors is an integer number (801957).

Almost surely, 2^5551965 is an apocalyptic number.

It is an amenable number.

5551965 is a deficient number, since it is larger than the sum of its proper divisors (4071519).

5551965 is a wasteful number, since it uses less digits than its factorization.

5551965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123388 (or 123385 counting only the distinct ones).

The product of its digits is 33750, while the sum is 36.

The square root of 5551965 is about 2356.2608089938. The cubic root of 5551965 is about 177.0715979613.

The spelling of 5551965 in words is "five million, five hundred fifty-one thousand, nine hundred sixty-five".