57355249 has 16 divisors (see below), whose sum is σ = 67858560. Its totient is φ = 47456640.

The previous prime is 57355247. The next prime is 57355267. The reversal of 57355249 is 94255375.

It is not a de Polignac number, because 57355249 - 2¹ = 57355247 is a prime.

It is not an unprimeable number, because it can be changed into a prime (57355247) 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, 25719 + ... + 27859.

It is an arithmetic number, because the mean of its divisors is an integer number (4241160).

Almost surely, 2^57355249 is an apocalyptic number.

It is an amenable number.

57355249 is a deficient number, since it is larger than the sum of its proper divisors (10503311).

57355249 is a wasteful number, since it uses less digits than its factorization.

57355249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2280.

The product of its digits is 189000, while the sum is 40.

The square root of 57355249 is about 7573.3248312746. The cubic root of 57355249 is about 385.6479761052.

The spelling of 57355249 in words is "fifty-seven million, three hundred fifty-five thousand, two hundred forty-nine".