57554420 has 144 divisors (see below), whose sum is σ = 162025920. Its totient is φ = 16934400.

The previous prime is 57554417. The next prime is 57554429. The reversal of 57554420 is 2445575.

It is a super-2 number, since 2×57554420² = 6625022523072800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57554429) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 204680 + ... + 204960.

It is an arithmetic number, because the mean of its divisors is an integer number (1125180).

Almost surely, 2^57554420 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 57554420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81012960).

57554420 is an abundant number, since it is smaller than the sum of its proper divisors (104471500).

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

57554420 is a wasteful number, since it uses less digits than its factorization.

57554420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334 (or 325 counting only the distinct ones).

The product of its (nonzero) digits is 28000, while the sum is 32.

The square root of 57554420 is about 7586.4629439548. The cubic root of 57554420 is about 386.0938588906.

Adding to 57554420 its reverse (2445575), we get a palindrome (59999995).

The spelling of 57554420 in words is "fifty-seven million, five hundred fifty-four thousand, four hundred twenty".