55397376 has 66 divisors (see below), whose sum is σ = 159985332. Its totient is φ = 18462720.

The previous prime is 55397371. The next prime is 55397387. The reversal of 55397376 is 67379355.

55397376 is a `hidden beast` number, since 553 + 97 + 3 + 7 + 6 = 666.

It is not an unprimeable number, because it can be changed into a prime (55397371) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6211 + ... + 12221.

Almost surely, 2^55397376 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 55397376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79992666).

55397376 is an abundant number, since it is smaller than the sum of its proper divisors (104587956).

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

55397376 is a wasteful number, since it uses less digits than its factorization.

55397376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6037 (or 6016 counting only the distinct ones).

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

The square root of 55397376 is about 7442.9413540616. The cubic root of 55397376 is about 381.2089291599.

The spelling of 55397376 in words is "fifty-five million, three hundred ninety-seven thousand, three hundred seventy-six".