55742220507556 has 48 divisors (see below), whose sum is σ = 106610726476800. Its totient is φ = 25291252415520.

The previous prime is 55742220507539. The next prime is 55742220507577. The reversal of 55742220507556 is 65570502224755.

It is a super-2 number, since 2×55742220507556² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 55742220507497 and 55742220507506.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 178089265 + ... + 178401991.

It is an arithmetic number, because the mean of its divisors is an integer number (2221056801600).

Almost surely, 2^{55742220507556} is an apocalyptic number.

It is an amenable number.

55742220507556 is a deficient number, since it is larger than the sum of its proper divisors (50868505969244).

55742220507556 is a wasteful number, since it uses less digits than its factorization.

55742220507556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320104 (or 320102 counting only the distinct ones).

The product of its (nonzero) digits is 29400000, while the sum is 55.

The spelling of 55742220507556 in words is "fifty-five trillion, seven hundred forty-two billion, two hundred twenty million, five hundred seven thousand, five hundred fifty-six".