83553980 has 24 divisors (see below), whose sum is σ = 185785488. Its totient is φ = 31455488.

The previous prime is 83553973. The next prime is 83553989. The reversal of 83553980 is 8935538.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83553989) 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, 122534 + ... + 123213.

It is an arithmetic number, because the mean of its divisors is an integer number (7741062).

Almost surely, 2^83553980 is an apocalyptic number.

It is an amenable number.

83553980 is an abundant number, since it is smaller than the sum of its proper divisors (102231508).

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

83553980 is a wasteful number, since it uses less digits than its factorization.

83553980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245773 (or 245771 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 41.

The square root of 83553980 is about 9140.7866182293. The cubic root of 83553980 is about 437.1753978612.

The spelling of 83553980 in words is "eighty-three million, five hundred fifty-three thousand, nine hundred eighty".