57255744 has 224 divisors, whose sum is σ = 194584320. Its totient is φ = 14450688.

The previous prime is 57255713. The next prime is 57255767. The reversal of 57255744 is 44755275.

It is a tau number, because it is divible by the number of its divisors (224).

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 506632 + ... + 506744.

It is an arithmetic number, because the mean of its divisors is an integer number (868680).

Almost surely, 2^57255744 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 57255744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97292160).

57255744 is an abundant number, since it is smaller than the sum of its proper divisors (137328576).

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

57255744 is a wasteful number, since it uses less digits than its factorization.

57255744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177 (or 167 counting only the distinct ones).

The product of its digits is 196000, while the sum is 39.

The square root of 57255744 is about 7566.7525398945. The cubic root of 57255744 is about 385.4248281781.

The spelling of 57255744 in words is "fifty-seven million, two hundred fifty-five thousand, seven hundred forty-four".