55475557772 has 48 divisors (see below), whose sum is σ = 101227492800. Its totient is φ = 26569294080.

The previous prime is 55475557747. The next prime is 55475557817. The reversal of 55475557772 is 27775557455.

It is a super-2 number, since 2×55475557772² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10211897 + ... + 10217327.

It is an arithmetic number, because the mean of its divisors is an integer number (2108906100).

Almost surely, 2^55475557772 is an apocalyptic number.

It is an amenable number.

55475557772 is a deficient number, since it is larger than the sum of its proper divisors (45751935028).

55475557772 is a wasteful number, since it uses less digits than its factorization.

55475557772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6146 (or 6144 counting only the distinct ones).

The product of its digits is 60025000, while the sum is 59.

The spelling of 55475557772 in words is "fifty-five billion, four hundred seventy-five million, five hundred fifty-seven thousand, seven hundred seventy-two".