53005788 has 36 divisors (see below), whose sum is σ = 146168568. Its totient is φ = 16062240.

The previous prime is 53005769. The next prime is 53005789. The reversal of 53005788 is 88750035.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×53005788² = 5619227123001888, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53005789) 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, 66531 + ... + 67322.

It is an arithmetic number, because the mean of its divisors is an integer number (4060238).

Almost surely, 2^53005788 is an apocalyptic number.

It is an amenable number.

53005788 is an abundant number, since it is smaller than the sum of its proper divisors (93162780).

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

53005788 is a wasteful number, since it uses less digits than its factorization.

53005788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133874 (or 133869 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 36.

The square root of 53005788 is about 7280.5073999001. The cubic root of 53005788 is about 375.6422487495.

The spelling of 53005788 in words is "fifty-three million, five thousand, seven hundred eighty-eight".