53566428 has 24 divisors (see below), whose sum is σ = 125106688. Its totient is φ = 17838576.

The previous prime is 53566423. The next prime is 53566477. The reversal of 53566428 is 82466535.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53566423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23925 + ... + 26067.

Almost surely, 2^53566428 is an apocalyptic number.

It is an amenable number.

53566428 is an abundant number, since it is smaller than the sum of its proper divisors (71540260).

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

53566428 is a wasteful number, since it uses less digits than its factorization.

53566428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4233 (or 4231 counting only the distinct ones).

The product of its digits is 172800, while the sum is 39.

The square root of 53566428 is about 7318.9089350804. The cubic root of 53566428 is about 376.9619907879.

The spelling of 53566428 in words is "fifty-three million, five hundred sixty-six thousand, four hundred twenty-eight".