55328976 has 60 divisors (see below), whose sum is σ = 155628928. Its totient is φ = 18349632.

The previous prime is 55328971. The next prime is 55328983. The reversal of 55328976 is 67982355.

It is a happy number.

55328976 is a `hidden beast` number, since 553 + 2 + 8 + 97 + 6 = 666.

It is a super-2 number, since 2×55328976² = 6122591170417152, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55328971) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31251 + ... + 32973.

Almost surely, 2^55328976 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 55328976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77814464).

55328976 is an abundant number, since it is smaller than the sum of its proper divisors (100299952).

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

55328976 is a wasteful number, since it uses less digits than its factorization.

55328976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1960 (or 1951 counting only the distinct ones).

The product of its digits is 453600, while the sum is 45.

The square root of 55328976 is about 7438.3449772110. The cubic root of 55328976 is about 381.0519696815.

The spelling of 55328976 in words is "fifty-five million, three hundred twenty-eight thousand, nine hundred seventy-six".