53580978 has 72 divisors (see below), whose sum is σ = 129737244. Its totient is φ = 15966720.

The previous prime is 53580977. The next prime is 53581013. The reversal of 53580978 is 87908535.

It can be written as a sum of positive squares in 2 ways, for example, as 53187849 + 393129 = 7293^2 + 627^2 .

It is not an unprimeable number, because it can be changed into a prime (53580971) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 158826 + ... + 159162.

Almost surely, 2^53580978 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53580978, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64868622).

53580978 is an abundant number, since it is smaller than the sum of its proper divisors (76156266).

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

53580978 is a wasteful number, since it uses less digits than its factorization.

53580978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440 (or 426 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 45.

The square root of 53580978 is about 7319.9028682080. The cubic root of 53580978 is about 376.9961185096.

The spelling of 53580978 in words is "fifty-three million, five hundred eighty thousand, nine hundred seventy-eight".