5501561 has 8 divisors (see below), whose sum is σ = 6129480. Its totient is φ = 4902912.

The previous prime is 5501543. The next prime is 5501563. The reversal of 5501561 is 1651055.

It can be written as a sum of positive squares in 4 ways, for example, as 7225 + 5494336 = 85^2 + 2344^2 .

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 5501561 - 2¹⁴ = 5485177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5501563) 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, 6920 + ... + 7673.

It is an arithmetic number, because the mean of its divisors is an integer number (766185).

Almost surely, 2^5501561 is an apocalyptic number.

It is an amenable number.

5501561 is a deficient number, since it is larger than the sum of its proper divisors (627919).

5501561 is a wasteful number, since it uses less digits than its factorization.

5501561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14635.

The product of its (nonzero) digits is 750, while the sum is 23.

The square root of 5501561 is about 2345.5406626192. The cubic root of 5501561 is about 176.5341148041.

The spelling of 5501561 in words is "five million, five hundred one thousand, five hundred sixty-one".