5545557 has 8 divisors (see below), whose sum is σ = 8215680. Its totient is φ = 3697020.

The previous prime is 5545543. The next prime is 5545567. The reversal of 5545557 is 7555455.

It is a happy number.

5545557 is a `hidden beast` number, since 554 + 55 + 57 = 666.

It is not a de Polignac number, because 5545557 - 2⁶ = 5545493 is a prime.

5545557 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5545567) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102669 + ... + 102722.

It is an arithmetic number, because the mean of its divisors is an integer number (1026960).

Almost surely, 2^5545557 is an apocalyptic number.

It is an amenable number.

5545557 is a deficient number, since it is larger than the sum of its proper divisors (2670123).

5545557 is a wasteful number, since it uses less digits than its factorization.

5545557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205400 (or 205394 counting only the distinct ones).

The product of its digits is 87500, while the sum is 36.

The square root of 5545557 is about 2354.9006348464. The cubic root of 5545557 is about 177.0034472181.

The spelling of 5545557 in words is "five million, five hundred forty-five thousand, five hundred fifty-seven".