55457748 has 36 divisors (see below), whose sum is σ = 143607828. Its totient is φ = 18034560.

The previous prime is 55457747. The next prime is 55457749. The reversal of 55457748 is 84775455.

55457748 is a `hidden beast` number, since 554 + 57 + 7 + 48 = 666.

It is an interprime number because it is at equal distance from previous prime (55457747) and next prime (55457749).

It can be written as a sum of positive squares in 2 ways, for example, as 28708164 + 26749584 = 5358^2 + 5172^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55457747) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17311 + ... + 20262.

Almost surely, 2^55457748 is an apocalyptic number.

It is an amenable number.

55457748 is an abundant number, since it is smaller than the sum of its proper divisors (88150080).

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

55457748 is a wasteful number, since it uses less digits than its factorization.

55457748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37624 (or 37619 counting only the distinct ones).

The product of its digits is 784000, while the sum is 45.

The square root of 55457748 is about 7446.9959043899. The cubic root of 55457748 is about 381.3473592436.

The spelling of 55457748 in words is "fifty-five million, four hundred fifty-seven thousand, seven hundred forty-eight".