5540026721 has 16 divisors (see below), whose sum is σ = 5868685440. Its totient is φ = 5218899840.

The previous prime is 5540026633. The next prime is 5540026729. The reversal of 5540026721 is 1276200455.

It is a cyclic number.

It is not a de Polignac number, because 5540026721 - 2¹⁸ = 5539764577 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 (5540026729) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1376450 + ... + 1380468.

It is an arithmetic number, because the mean of its divisors is an integer number (366792840).

Almost surely, 2^5540026721 is an apocalyptic number.

It is an amenable number.

5540026721 is a deficient number, since it is larger than the sum of its proper divisors (328658719).

5540026721 is a wasteful number, since it uses less digits than its factorization.

5540026721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4936.

The product of its (nonzero) digits is 16800, while the sum is 32.

The square root of 5540026721 is about 74431.3557648925. The cubic root of 5540026721 is about 1769.4458904744.

The spelling of 5540026721 in words is "five billion, five hundred forty million, twenty-six thousand, seven hundred twenty-one".