55070021982 has 32 divisors (see below), whose sum is σ = 113773169664. Its totient is φ = 17751988800.

The previous prime is 55070021879. The next prime is 55070021983. The reversal of 55070021982 is 28912007055.

It is a self number, because there is not a number n which added to its sum of digits gives 55070021982.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55070021983) 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, 161682 + ... + 369162.

It is an arithmetic number, because the mean of its divisors is an integer number (3555411552).

Almost surely, 2^55070021982 is an apocalyptic number.

55070021982 is an abundant number, since it is smaller than the sum of its proper divisors (58703147682).

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

55070021982 is a wasteful number, since it uses less digits than its factorization.

55070021982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208944.

The product of its (nonzero) digits is 50400, while the sum is 39.

The spelling of 55070021982 in words is "fifty-five billion, seventy million, twenty-one thousand, nine hundred eighty-two".