55559752979 has 4 divisors (see below), whose sum is σ = 57475606560. Its totient is φ = 53643899400.

The previous prime is 55559752951. The next prime is 55559752987. The reversal of 55559752979 is 97925795555.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55559752979 - 2⁸ = 55559752723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55559752909) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 957926747 + ... + 957926804.

It is an arithmetic number, because the mean of its divisors is an integer number (14368901640).

Almost surely, 2^55559752979 is an apocalyptic number.

55559752979 is a deficient number, since it is larger than the sum of its proper divisors (1915853581).

55559752979 is a wasteful number, since it uses less digits than its factorization.

55559752979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1915853580.

The product of its digits is 223256250, while the sum is 68.

The spelling of 55559752979 in words is "fifty-five billion, five hundred fifty-nine million, seven hundred fifty-two thousand, nine hundred seventy-nine".