55740416 has 48 divisors (see below), whose sum is σ = 118083420. Its totient is φ = 26214400.

The previous prime is 55740413. The next prime is 55740439. The reversal of 55740416 is 61404755.

It can be written as a sum of positive squares in 2 ways, for example, as 42198016 + 13542400 = 6496^2 + 3680^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55740413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34016 + ... + 35616.

Almost surely, 2^55740416 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 55740416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59041710).

55740416 is an abundant number, since it is smaller than the sum of its proper divisors (62343004).

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

55740416 is a wasteful number, since it uses less digits than its factorization.

55740416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1640 (or 1620 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 32.

The square root of 55740416 is about 7465.9504418393. The cubic root of 55740416 is about 381.9941703925.

The spelling of 55740416 in words is "fifty-five million, seven hundred forty thousand, four hundred sixteen".