55422015040 has 112 divisors (see below), whose sum is σ = 158765443200. Its totient is φ = 18001723392.

The previous prime is 55422015037. The next prime is 55422015049. The reversal of 55422015040 is 4051022455.

It is a tau number, because it is divible by the number of its divisors (112).

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (55422015049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 608545 + ... + 693664.

It is an arithmetic number, because the mean of its divisors is an integer number (1417548600).

Almost surely, 2^55422015040 is an apocalyptic number.

It is an amenable number.

55422015040 is an abundant number, since it is smaller than the sum of its proper divisors (103343428160).

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

55422015040 is a wasteful number, since it uses less digits than its factorization.

55422015040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1302252 (or 1302242 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 28.

Adding to 55422015040 its reverse (4051022455), we get a palindrome (59473037495).

The spelling of 55422015040 in words is "fifty-five billion, four hundred twenty-two million, fifteen thousand, forty".