5641061449 has 27 divisors (see below), whose sum is σ = 6147944397. Its totient is φ = 5175172728.

The previous prime is 5641061441. The next prime is 5641061453. The reversal of 5641061449 is 9441601465.

The square root of 5641061449 is 75107.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 5641061449 - 2³ = 5641061441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5641061441) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 84194914 + ... + 84194980.

Almost surely, 2^5641061449 is an apocalyptic number.

5641061449 is a gapful number since it is divisible by the number (59) formed by its first and last digit.

5641061449 is the 75107-th square number.

5641061449 is the 37554-th centered octagonal number.

It is an amenable number.

5641061449 is a deficient number, since it is larger than the sum of its proper divisors (506882948).

5641061449 is an frugal number, since it uses more digits than its factorization.

5641061449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290 (or 145 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 40.

The cubic root of 5641061449 is about 1780.1377506701.

The spelling of 5641061449 in words is "five billion, six hundred forty-one million, sixty-one thousand, four hundred forty-nine".