57542779220 has 48 divisors (see below), whose sum is σ = 123955066368. Its totient is φ = 22425258240.

The previous prime is 57542779207. The next prime is 57542779223. The reversal of 57542779220 is 2297724575.

It is a super-2 number, since 2×57542779220² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57542779223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 562037 + ... + 656483.

It is an arithmetic number, because the mean of its divisors is an integer number (2582397216).

Almost surely, 2^57542779220 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 57542779220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61977533184).

57542779220 is an abundant number, since it is smaller than the sum of its proper divisors (66412287148).

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

57542779220 is a wasteful number, since it uses less digits than its factorization.

57542779220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95240 (or 95238 counting only the distinct ones).

The product of its (nonzero) digits is 2469600, while the sum is 50.

The spelling of 57542779220 in words is "fifty-seven billion, five hundred forty-two million, seven hundred seventy-nine thousand, two hundred twenty".