5551945 has 48 divisors (see below), whose sum is σ = 8667648. Its totient is φ = 3386880.

The previous prime is 5551939. The next prime is 5551951. The reversal of 5551945 is 5491555.

It is an interprime number because it is at equal distance from previous prime (5551939) and next prime (5551951).

It is not a de Polignac number, because 5551945 - 2³ = 5551937 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5551945.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 129094 + ... + 129136.

It is an arithmetic number, because the mean of its divisors is an integer number (180576).

Almost surely, 2^5551945 is an apocalyptic number.

It is an amenable number.

5551945 is a deficient number, since it is larger than the sum of its proper divisors (3115703).

5551945 is a wasteful number, since it uses less digits than its factorization.

5551945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110 (or 103 counting only the distinct ones).

The product of its digits is 22500, while the sum is 34.

The square root of 5551945 is about 2356.2565649776. The cubic root of 5551945 is about 177.0713853377.

It can be divided in two parts, 555 and 1945, that added together give a square (2500 = 50²).

The spelling of 5551945 in words is "five million, five hundred fifty-one thousand, nine hundred forty-five".