5611436021 has 8 divisors (see below), whose sum is σ = 5767013304. Its totient is φ = 5456064960.

The previous prime is 5611436011. The next prime is 5611436023. The reversal of 5611436021 is 1206341165.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2906395921 + 2705040100 = 53911^2 + 52010^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 5611436021 - 2¹⁴ = 5611419637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5611436023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4451 + ... + 106031.

It is an arithmetic number, because the mean of its divisors is an integer number (720876663).

Almost surely, 2^5611436021 is an apocalyptic number.

It is an amenable number.

5611436021 is a deficient number, since it is larger than the sum of its proper divisors (155577283).

5611436021 is a wasteful number, since it uses less digits than its factorization.

5611436021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103111.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 5611436021 is about 74909.5188944636. The cubic root of 5611436021 is about 1777.0160016513.

Adding to 5611436021 its reverse (1206341165), we get a palindrome (6817777186).

The spelling of 5611436021 in words is "five billion, six hundred eleven million, four hundred thirty-six thousand, twenty-one".