57242620 has 12 divisors (see below), whose sum is σ = 120209544. Its totient is φ = 22897040.

The previous prime is 57242609. The next prime is 57242623. The reversal of 57242620 is 2624275.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57242623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1431046 + ... + 1431085.

It is an arithmetic number, because the mean of its divisors is an integer number (10017462).

Almost surely, 2^57242620 is an apocalyptic number.

It is an amenable number.

57242620 is an abundant number, since it is smaller than the sum of its proper divisors (62966924).

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

57242620 is a wasteful number, since it uses less digits than its factorization.

57242620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2862140 (or 2862138 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 57242620 is about 7565.8852753660. The cubic root of 57242620 is about 385.3953772641.

Adding to 57242620 its reverse (2624275), we get a palindrome (59866895).

The spelling of 57242620 in words is "fifty-seven million, two hundred forty-two thousand, six hundred twenty".