55245784 has 32 divisors (see below), whose sum is σ = 119653200. Its totient is φ = 23633920.

The previous prime is 55245781. The next prime is 55245791. The reversal of 55245784 is 48754255.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55245781) 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, 16969 + ... + 19960.

Almost surely, 2^55245784 is an apocalyptic number.

It is an amenable number.

55245784 is an abundant number, since it is smaller than the sum of its proper divisors (64407416).

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

55245784 is a wasteful number, since it uses less digits than its factorization.

55245784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36963 (or 36959 counting only the distinct ones).

The product of its digits is 224000, while the sum is 40.

The square root of 55245784 is about 7432.7507693989. The cubic root of 55245784 is about 380.8608921232.

The spelling of 55245784 in words is "fifty-five million, two hundred forty-five thousand, seven hundred eighty-four".