55640796 has 48 divisors (see below), whose sum is σ = 140684544. Its totient is φ = 17047296.

The previous prime is 55640789. The next prime is 55640801. The reversal of 55640796 is 69704655.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 5601 + ... + 11943.

It is an arithmetic number, because the mean of its divisors is an integer number (2930928).

Almost surely, 2^55640796 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55640796, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70342272).

55640796 is an abundant number, since it is smaller than the sum of its proper divisors (85043748).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55640796 is a wasteful number, since it uses less digits than its factorization.

55640796 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6410 (or 6408 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 42.

The square root of 55640796 is about 7459.2758361653. The cubic root of 55640796 is about 381.7664663620.

The spelling of 55640796 in words is "fifty-five million, six hundred forty thousand, seven hundred ninety-six".