55378452 has 24 divisors (see below), whose sum is σ = 136817856. Its totient is φ = 17373568.

The previous prime is 55378441. The next prime is 55378459. The reversal of 55378452 is 25487355.

It is a self number, because there is not a number n which added to its sum of digits gives 55378452.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55378459) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 135528 + ... + 135935.

It is an arithmetic number, because the mean of its divisors is an integer number (5700744).

Almost surely, 2^55378452 is an apocalyptic number.

It is an amenable number.

55378452 is an abundant number, since it is smaller than the sum of its proper divisors (81439404).

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

55378452 is a wasteful number, since it uses less digits than its factorization.

55378452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271487 (or 271485 counting only the distinct ones).

The product of its digits is 168000, while the sum is 39.

The square root of 55378452 is about 7441.6699738701. The cubic root of 55378452 is about 381.1655166381.

The spelling of 55378452 in words is "fifty-five million, three hundred seventy-eight thousand, four hundred fifty-two".