53987000 has 32 divisors (see below), whose sum is σ = 126331920. Its totient is φ = 21594400.

The previous prime is 53986987. The next prime is 53987029. The reversal of 53987000 is 78935.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25994 + ... + 27993.

Almost surely, 2^53987000 is an apocalyptic number.

53987000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

53987000 is an abundant number, since it is smaller than the sum of its proper divisors (72344920).

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

53987000 is a wasteful number, since it uses less digits than its factorization.

53987000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54008 (or 53994 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 53987000 is about 7347.5846371444. The cubic root of 53987000 is about 377.9459811014.

The spelling of 53987000 in words is "fifty-three million, nine hundred eighty-seven thousand".