53669380 has 36 divisors (see below), whose sum is σ = 114524172. Its totient is φ = 21124800.

The previous prime is 53669359. The next prime is 53669387. The reversal of 53669380 is 8396635.

It can be written as a sum of positive squares in 2 ways, for example, as 38365636 + 15303744 = 6194^2 + 3912^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53669387) 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, 329179 + ... + 329341.

It is an arithmetic number, because the mean of its divisors is an integer number (3181227).

Almost surely, 2^53669380 is an apocalyptic number.

It is an amenable number.

53669380 is an abundant number, since it is smaller than the sum of its proper divisors (60854792).

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

53669380 is a wasteful number, since it uses less digits than its factorization.

53669380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436 (or 271 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 40.

The square root of 53669380 is about 7325.9388476836. The cubic root of 53669380 is about 377.2033369436.

The spelling of 53669380 in words is "fifty-three million, six hundred sixty-nine thousand, three hundred eighty".