57322620 has 192 divisors, whose sum is σ = 194073600. Its totient is φ = 13996800.

The previous prime is 57322579. The next prime is 57322621. The reversal of 57322620 is 2622375.

57322620 is a `hidden beast` number, since 5 + 7 + 32 + 2 + 620 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57322621) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 379545 + ... + 379695.

It is an arithmetic number, because the mean of its divisors is an integer number (1010800).

Almost surely, 2^57322620 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57322620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97036800).

57322620 is an abundant number, since it is smaller than the sum of its proper divisors (136750980).

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

57322620 is a wasteful number, since it uses less digits than its factorization.

57322620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225 (or 217 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The square root of 57322620 is about 7571.1703190458. The cubic root of 57322620 is about 385.5748314208.

Adding to 57322620 its reverse (2622375), we get a palindrome (59944995).

The spelling of 57322620 in words is "fifty-seven million, three hundred twenty-two thousand, six hundred twenty".