52440221555 has 16 divisors (see below), whose sum is σ = 66749611680. Its totient is φ = 39413478912.

The previous prime is 52440221549. The next prime is 52440221557. The reversal of 52440221555 is 55512204425.

It is not a de Polignac number, because 52440221555 - 2¹⁴ = 52440205171 is a prime.

It is not an unprimeable number, because it can be changed into a prime (52440221557) 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, 506465 + ... + 601154.

It is an arithmetic number, because the mean of its divisors is an integer number (4171850730).

Almost surely, 2^52440221555 is an apocalyptic number.

52440221555 is a deficient number, since it is larger than the sum of its proper divisors (14309390125).

52440221555 is a wasteful number, since it uses less digits than its factorization.

52440221555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1108198.

The product of its (nonzero) digits is 80000, while the sum is 35.

The spelling of 52440221555 in words is "fifty-two billion, four hundred forty million, two hundred twenty-one thousand, five hundred fifty-five".