53173940 has 24 divisors (see below), whose sum is σ = 112923720. Its totient is φ = 21029888.

The previous prime is 53173937. The next prime is 53173949. The reversal of 53173940 is 4937135.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 10061584 + 43112356 = 3172^2 + 6566^2 .

It is a junction number, because it is equal to n+sod(n) for n = 53173897 and 53173906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53173949) 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, 13157 + ... + 16716.

It is an arithmetic number, because the mean of its divisors is an integer number (4705155).

Almost surely, 2^53173940 is an apocalyptic number.

It is an amenable number.

53173940 is an abundant number, since it is smaller than the sum of its proper divisors (59749780).

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

53173940 is a wasteful number, since it uses less digits than its factorization.

53173940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29971 (or 29969 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 32.

The square root of 53173940 is about 7292.0463520194. The cubic root of 53173940 is about 376.0390501920.

The spelling of 53173940 in words is "fifty-three million, one hundred seventy-three thousand, nine hundred forty".