57245436 has 72 divisors (see below), whose sum is σ = 154312704. Its totient is φ = 17851680.

The previous prime is 57245431. The next prime is 57245479. The reversal of 57245436 is 63454275.

57245436 is a `hidden beast` number, since 572 + 4 + 54 + 36 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 57245436.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57245431) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38181 + ... + 39651.

It is an arithmetic number, because the mean of its divisors is an integer number (2143232).

Almost surely, 2^57245436 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 57245436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77156352).

57245436 is an abundant number, since it is smaller than the sum of its proper divisors (97067268).

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

57245436 is a wasteful number, since it uses less digits than its factorization.

57245436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1551 (or 1546 counting only the distinct ones).

The product of its digits is 100800, while the sum is 36.

The square root of 57245436 is about 7566.0713715904. The cubic root of 57245436 is about 385.4016968886.

The spelling of 57245436 in words is "fifty-seven million, two hundred forty-five thousand, four hundred thirty-six".