53775140 has 12 divisors (see below), whose sum is σ = 112927836. Its totient is φ = 21510048.

The previous prime is 53775133. The next prime is 53775157. The reversal of 53775140 is 4157735.

It can be written as a sum of positive squares in 2 ways, for example, as 6770404 + 47004736 = 2602^2 + 6856^2 .

It is a junction number, because it is equal to n+sod(n) for n = 53775097 and 53775106.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1344359 + ... + 1344398.

It is an arithmetic number, because the mean of its divisors is an integer number (9410653).

Almost surely, 2^53775140 is an apocalyptic number.

It is an amenable number.

53775140 is an abundant number, since it is smaller than the sum of its proper divisors (59152696).

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

53775140 is a wasteful number, since it uses less digits than its factorization.

53775140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2688766 (or 2688764 counting only the distinct ones).

The product of its (nonzero) digits is 14700, while the sum is 32.

The square root of 53775140 is about 7333.1534826431. The cubic root of 53775140 is about 377.4509446073.

The spelling of 53775140 in words is "fifty-three million, seven hundred seventy-five thousand, one hundred forty".