53897988 has 24 divisors (see below), whose sum is σ = 126028000. Its totient is φ = 17928000.

The previous prime is 53897981. The next prime is 53897989. The reversal of 53897988 is 88979835.

It is a super-2 number, since 2×53897988² = 5809986220896288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (53897981) 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, 1488 + ... + 10488.

Almost surely, 2^53897988 is an apocalyptic number.

It is an amenable number.

53897988 is an abundant number, since it is smaller than the sum of its proper divisors (72130012).

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

53897988 is a wasteful number, since it uses less digits than its factorization.

53897988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9507 (or 9505 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 57.

The square root of 53897988 is about 7341.5249097173. The cubic root of 53897988 is about 377.7381518478.

The spelling of 53897988 in words is "fifty-three million, eight hundred ninety-seven thousand, nine hundred eighty-eight".