55536221730 has 32 divisors (see below), whose sum is σ = 145403926848. Its totient is φ = 13463326400.

The previous prime is 55536221729. The next prime is 55536221731. The reversal of 55536221730 is 3712263555.

It is an interprime number because it is at equal distance from previous prime (55536221729) and next prime (55536221731).

It is not an unprimeable number, because it can be changed into a prime (55536221731) 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, 84145461 + ... + 84146120.

It is an arithmetic number, because the mean of its divisors is an integer number (4543872714).

Almost surely, 2^55536221730 is an apocalyptic number.

55536221730 is an abundant number, since it is smaller than the sum of its proper divisors (89867705118).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55536221730 is a wasteful number, since it uses less digits than its factorization.

55536221730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168291602.

The product of its (nonzero) digits is 189000, while the sum is 39.

The spelling of 55536221730 in words is "fifty-five billion, five hundred thirty-six million, two hundred twenty-one thousand, seven hundred thirty".