55101556 has 24 divisors (see below), whose sum is σ = 104033160. Its totient is φ = 25439232.

The previous prime is 55101521. The next prime is 55101559. The reversal of 55101556 is 65510155.

It can be written as a sum of positive squares in 4 ways, for example, as 23853456 + 31248100 = 4884^2 + 5590^2 .

It is a super-2 number, since 2×55101556² = 6072362947242272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55101559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4041 + ... + 11248.

It is an arithmetic number, because the mean of its divisors is an integer number (4334715).

Almost surely, 2^55101556 is an apocalyptic number.

It is an amenable number.

55101556 is a deficient number, since it is larger than the sum of its proper divisors (48931604).

55101556 is a wasteful number, since it uses less digits than its factorization.

55101556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15363 (or 15361 counting only the distinct ones).

The product of its (nonzero) digits is 3750, while the sum is 28.

The square root of 55101556 is about 7423.0422334781. The cubic root of 55101556 is about 380.5291704236.

The spelling of 55101556 in words is "fifty-five million, one hundred one thousand, five hundred fifty-six".