5575781 has 4 divisors (see below), whose sum is σ = 5604000. Its totient is φ = 5547564.

The previous prime is 5575777. The next prime is 5575783. The reversal of 5575781 is 1875755.

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 a cyclic number.

It is not a de Polignac number, because 5575781 - 2² = 5575777 is a prime.

It is a super-2 number, since 2×5575781² = 62178667519922, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5575783) 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, 13811 + ... + 14208.

It is an arithmetic number, because the mean of its divisors is an integer number (1401000).

Almost surely, 2^5575781 is an apocalyptic number.

It is an amenable number.

5575781 is a deficient number, since it is larger than the sum of its proper divisors (28219).

5575781 is a wasteful number, since it uses less digits than its factorization.

5575781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28218.

The product of its digits is 49000, while the sum is 38.

The square root of 5575781 is about 2361.3091707779. The cubic root of 5575781 is about 177.3244286551.

The spelling of 5575781 in words is "five million, five hundred seventy-five thousand, seven hundred eighty-one".