53019988 has 24 divisors (see below), whose sum is σ = 106699712. Its totient is φ = 22581504.

The previous prime is 53019983. The next prime is 53019997. The reversal of 53019988 is 88991035.

It is a super-2 number, since 2×53019988² = 5622238255040288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53019983) 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, 1245 + ... + 10372.

Almost surely, 2^53019988 is an apocalyptic number.

It is an amenable number.

53019988 is an abundant number, since it is smaller than the sum of its proper divisors (53679724).

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

53019988 is a wasteful number, since it uses less digits than its factorization.

53019988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11791 (or 11789 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 43.

The square root of 53019988 is about 7281.4825413510. The cubic root of 53019988 is about 375.6757900153.

The spelling of 53019988 in words is "fifty-three million, nineteen thousand, nine hundred eighty-eight".