5490661 has 4 divisors (see below), whose sum is σ = 5989824. Its totient is φ = 4991500.

The previous prime is 5490649. The next prime is 5490673. The reversal of 5490661 is 1660945.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (5490649) and next prime (5490673).

It is a cyclic number.

It is not a de Polignac number, because 5490661 - 2¹⁷ = 5359589 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5490631) 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, 249565 + ... + 249586.

It is an arithmetic number, because the mean of its divisors is an integer number (1497456).

Almost surely, 2^5490661 is an apocalyptic number.

It is an amenable number.

5490661 is a deficient number, since it is larger than the sum of its proper divisors (499163).

5490661 is a wasteful number, since it uses less digits than its factorization.

5490661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 499162.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 5490661 is about 2343.2159524892. The cubic root of 5490661 is about 176.4174513066.

The spelling of 5490661 in words is "five million, four hundred ninety thousand, six hundred sixty-one".