53909376 has 128 divisors (see below), whose sum is σ = 152755200. Its totient is φ = 16816128.

The previous prime is 53909371. The next prime is 53909381. The reversal of 53909376 is 67390935.

It is an interprime number because it is at equal distance from previous prime (53909371) and next prime (53909381).

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53909371) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 523341 + ... + 523443.

It is an arithmetic number, because the mean of its divisors is an integer number (1193400).

Almost surely, 2^53909376 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 53909376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76377600).

53909376 is an abundant number, since it is smaller than the sum of its proper divisors (98845824).

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

53909376 is a wasteful number, since it uses less digits than its factorization.

53909376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196 (or 184 counting only the distinct ones).

The product of its (nonzero) digits is 153090, while the sum is 42.

The square root of 53909376 is about 7342.3004569413. The cubic root of 53909376 is about 377.7647538250.

It can be divided in two parts, 53909 and 376, that added together give a triangular number (54285 = T₃₂₉).

The spelling of 53909376 in words is "fifty-three million, nine hundred nine thousand, three hundred seventy-six".