5405531121 has 6 divisors (see below), whose sum is σ = 7807989410. Its totient is φ = 3603687408.

The previous prime is 5405531077. The next prime is 5405531129. The reversal of 5405531121 is 1211355045.

5405531121 is a `hidden beast` number, since 5 + 4 + 0 + 5 + 531 + 121 = 666.

It can be written as a sum of positive squares in only one way, i.e., 3910626225 + 1494904896 = 62535^2 + 38664^2 .

It is not a de Polignac number, because 5405531121 - 2⁶ = 5405531057 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (5405531129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 300307276 + ... + 300307293.

Almost surely, 2^5405531121 is an apocalyptic number.

It is an amenable number.

5405531121 is a deficient number, since it is larger than the sum of its proper divisors (2402458289).

5405531121 is a wasteful number, since it uses less digits than its factorization.

5405531121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 600614575 (or 600614572 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

The square root of 5405531121 is about 73522.3171628860. The cubic root of 5405531121 is about 1755.0094420804.

Adding to 5405531121 its reverse (1211355045), we get a palindrome (6616886166).

The spelling of 5405531121 in words is "five billion, four hundred five million, five hundred thirty-one thousand, one hundred twenty-one".