53887780 has 12 divisors (see below), whose sum is σ = 113164380. Its totient is φ = 21555104.

The previous prime is 53887759. The next prime is 53887789. The reversal of 53887780 is 8778835.

It can be written as a sum of positive squares in 2 ways, for example, as 8433216 + 45454564 = 2904^2 + 6742^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 53887780.

It is not an unprimeable number, because it can be changed into a prime (53887789) by changing a digit.

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, 1347175 + ... + 1347214.

It is an arithmetic number, because the mean of its divisors is an integer number (9430365).

Almost surely, 2^53887780 is an apocalyptic number.

It is an amenable number.

53887780 is an abundant number, since it is smaller than the sum of its proper divisors (59276600).

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

53887780 is a wasteful number, since it uses less digits than its factorization.

53887780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2694398 (or 2694396 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 46.

The square root of 53887780 is about 7340.8296533839. The cubic root of 53887780 is about 377.7143031251.

The spelling of 53887780 in words is "fifty-three million, eight hundred eighty-seven thousand, seven hundred eighty".