5661554 has 8 divisors (see below), whose sum is σ = 8785260. Its totient is φ = 2733136.

The previous prime is 5661547. The next prime is 5661559. The reversal of 5661554 is 4551665.

It can be written as a sum of positive squares in 2 ways, for example, as 5396329 + 265225 = 2323^2 + 515^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 5661554.

It is not an unprimeable number, because it can be changed into a prime (5661559) 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, 48749 + ... + 48864.

Almost surely, 2^5661554 is an apocalyptic number.

5661554 is a deficient number, since it is larger than the sum of its proper divisors (3123706).

5661554 is a wasteful number, since it uses less digits than its factorization.

5661554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97644.

The product of its digits is 18000, while the sum is 32.

The square root of 5661554 is about 2379.4020257199. The cubic root of 5661554 is about 178.2290742575.

The spelling of 5661554 in words is "five million, six hundred sixty-one thousand, five hundred fifty-four".