55393776 has 60 divisors (see below), whose sum is σ = 160039360. Its totient is φ = 17867520.

The previous prime is 55393771. The next prime is 55393781. The reversal of 55393776 is 67739355.

55393776 is a `hidden beast` number, since 553 + 93 + 7 + 7 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (55393771) and next prime (55393781).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55393771) 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, 1741 + ... + 10668.

Almost surely, 2^55393776 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 55393776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80019680).

55393776 is an abundant number, since it is smaller than the sum of its proper divisors (104645584).

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

55393776 is a wasteful number, since it uses less digits than its factorization.

55393776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12454 (or 12445 counting only the distinct ones).

The product of its digits is 595350, while the sum is 45.

The square root of 55393776 is about 7442.6995102584. The cubic root of 55393776 is about 381.2006713568.

It can be divided in two parts, 55393 and 776, that added together give a square (56169 = 237²).

The spelling of 55393776 in words is "fifty-five million, three hundred ninety-three thousand, seven hundred seventy-six".