55144392 has 32 divisors (see below), whose sum is σ = 138062880. Its totient is φ = 18354560.

The previous prime is 55144391. The next prime is 55144421. The reversal of 55144392 is 29344155.

It is not an unprimeable number, because it can be changed into a prime (55144391) 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, 21667 + ... + 24077.

It is an arithmetic number, because the mean of its divisors is an integer number (4314465).

Almost surely, 2^55144392 is an apocalyptic number.

It is an amenable number.

55144392 is an abundant number, since it is smaller than the sum of its proper divisors (82918488).

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

55144392 is a wasteful number, since it uses less digits than its factorization.

55144392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3373 (or 3369 counting only the distinct ones).

The product of its digits is 21600, while the sum is 33.

The square root of 55144392 is about 7425.9270128382. The cubic root of 55144392 is about 380.6277527903.

The spelling of 55144392 in words is "fifty-five million, one hundred forty-four thousand, three hundred ninety-two".