55969556 has 24 divisors (see below), whose sum is σ = 99658944. Its totient is φ = 27499520.

The previous prime is 55969553. The next prime is 55969561. The reversal of 55969556 is 65596955.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55969553) 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, 86996 + ... + 87636.

It is an arithmetic number, because the mean of its divisors is an integer number (4152456).

Almost surely, 2^55969556 is an apocalyptic number.

It is an amenable number.

55969556 is a deficient number, since it is larger than the sum of its proper divisors (43689388).

55969556 is a wasteful number, since it uses less digits than its factorization.

55969556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 991 (or 989 counting only the distinct ones).

The product of its digits is 1822500, while the sum is 50.

The square root of 55969556 is about 7481.2803717011. The cubic root of 55969556 is about 382.5168938955.

The spelling of 55969556 in words is "fifty-five million, nine hundred sixty-nine thousand, five hundred fifty-six".