5655551 has 8 divisors (see below), whose sum is σ = 6382800. Its totient is φ = 4963840.

The previous prime is 5655541. The next prime is 5655569. The reversal of 5655551 is 1555565.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5655551 - 2¹⁴ = 5639167 is a prime.

It is a super-2 number, since 2×5655551² = 63970514227202, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5655511) 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, 8546 + ... + 9183.

It is an arithmetic number, because the mean of its divisors is an integer number (797850).

Almost surely, 2^5655551 is an apocalyptic number.

5655551 is a deficient number, since it is larger than the sum of its proper divisors (727249).

5655551 is a wasteful number, since it uses less digits than its factorization.

5655551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17769.

The product of its digits is 18750, while the sum is 32.

The square root of 5655551 is about 2378.1402397672. The cubic root of 5655551 is about 178.1660593149.

It can be divided in two parts, 565 and 5551, that added together give a palindrome (6116).

The spelling of 5655551 in words is "five million, six hundred fifty-five thousand, five hundred fifty-one".