53780688 has 60 divisors (see below), whose sum is σ = 162094660. Its totient is φ = 16547328.

The previous prime is 53780681. The next prime is 53780689. The reversal of 53780688 is 88608735.

It can be written as a sum of positive squares in 2 ways, for example, as 13483584 + 40297104 = 3672^2 + 6348^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53780681) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12493 + ... + 16236.

Almost surely, 2^53780688 is an apocalyptic number.

It is an amenable number.

53780688 is an abundant number, since it is smaller than the sum of its proper divisors (108313972).

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

53780688 is a wasteful number, since it uses less digits than its factorization.

53780688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28756 (or 28747 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The square root of 53780688 is about 7333.5317548914. The cubic root of 53780688 is about 377.4639247429.

It can be divided in two parts, 537 and 80688, that added together give a square (81225 = 285²).

The spelling of 53780688 in words is "fifty-three million, seven hundred eighty thousand, six hundred eighty-eight".