53982990 has 128 divisors (see below), whose sum is σ = 160704000. Its totient is φ = 12814848.

The previous prime is 53982967. The next prime is 53983003. The reversal of 53982990 is 9928935.

53982990 is a `hidden beast` number, since 539 + 8 + 29 + 90 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 86901 + ... + 87519.

It is an arithmetic number, because the mean of its divisors is an integer number (1255500).

Almost surely, 2^53982990 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53982990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80352000).

53982990 is an abundant number, since it is smaller than the sum of its proper divisors (106721010).

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

53982990 is a wasteful number, since it uses less digits than its factorization.

53982990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 671 (or 665 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 45.

The square root of 53982990 is about 7347.3117532877. The cubic root of 53982990 is about 377.9366232875.

The spelling of 53982990 in words is "fifty-three million, nine hundred eighty-two thousand, nine hundred ninety".