5625551 has 4 divisors (see below), whose sum is σ = 5680272. Its totient is φ = 5570832.

The previous prime is 5625509. The next prime is 5625553. The reversal of 5625551 is 1555265.

5625551 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 5625551 - 2¹⁰ = 5624527 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5625553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27206 + ... + 27411.

It is an arithmetic number, because the mean of its divisors is an integer number (1420068).

Almost surely, 2^5625551 is an apocalyptic number.

5625551 is a deficient number, since it is larger than the sum of its proper divisors (54721).

5625551 is a wasteful number, since it uses less digits than its factorization.

5625551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54720.

The product of its digits is 7500, while the sum is 29.

The square root of 5625551 is about 2371.8244032812. The cubic root of 5625551 is about 177.8504719926.

The spelling of 5625551 in words is "five million, six hundred twenty-five thousand, five hundred fifty-one".