55561756 has 6 divisors (see below), whose sum is σ = 97233080. Its totient is φ = 27780876.

The previous prime is 55561747. The next prime is 55561771. The reversal of 55561756 is 65716555.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6945216 + ... + 6945223.

Almost surely, 2^55561756 is an apocalyptic number.

It is an amenable number.

55561756 is a deficient number, since it is larger than the sum of its proper divisors (41671324).

55561756 is a wasteful number, since it uses less digits than its factorization.

55561756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13890443 (or 13890441 counting only the distinct ones).

The product of its digits is 157500, while the sum is 40.

The square root of 55561756 is about 7453.9758518525. The cubic root of 55561756 is about 381.5856091305.

The spelling of 55561756 in words is "fifty-five million, five hundred sixty-one thousand, seven hundred fifty-six".