5605551 has 48 divisors (see below), whose sum is σ = 10214400. Its totient is φ = 3020976.

The previous prime is 5605499. The next prime is 5605553. The reversal of 5605551 is 1555065.

5605551 is a `hidden beast` number, since 5 + 605 + 5 + 51 = 666.

It is not a de Polignac number, because 5605551 - 2⁷ = 5605423 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5605553) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 25026 + ... + 25248.

It is an arithmetic number, because the mean of its divisors is an integer number (212800).

Almost surely, 2^5605551 is an apocalyptic number.

5605551 is a deficient number, since it is larger than the sum of its proper divisors (4608849).

5605551 is a wasteful number, since it uses less digits than its factorization.

5605551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265 (or 252 counting only the distinct ones).

The product of its (nonzero) digits is 3750, while the sum is 27.

The square root of 5605551 is about 2367.6044855507. The cubic root of 5605551 is about 177.6394566279.

The spelling of 5605551 in words is "five million, six hundred five thousand, five hundred fifty-one".