53519780 has 12 divisors (see below), whose sum is σ = 112391580. Its totient is φ = 21407904.

The previous prime is 53519773. The next prime is 53519783. The reversal of 53519780 is 8791535.

It can be written as a sum of positive squares in 2 ways, for example, as 29333056 + 24186724 = 5416^2 + 4918^2 .

It is not an unprimeable number, because it can be changed into a prime (53519783) 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, 1337975 + ... + 1338014.

It is an arithmetic number, because the mean of its divisors is an integer number (9365965).

Almost surely, 2^53519780 is an apocalyptic number.

It is an amenable number.

53519780 is an abundant number, since it is smaller than the sum of its proper divisors (58871800).

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

53519780 is a wasteful number, since it uses less digits than its factorization.

53519780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2675998 (or 2675996 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 38.

The square root of 53519780 is about 7315.7214271731. The cubic root of 53519780 is about 376.8525339849.

It can be divided in two parts, 535 and 19780, that multiplied together give a triangular number (10582300 = T₄₆₀₀).

The spelling of 53519780 in words is "fifty-three million, five hundred nineteen thousand, seven hundred eighty".