57153381 has 4 divisors (see below), whose sum is σ = 76204512. Its totient is φ = 38102252.

The previous prime is 57153377. The next prime is 57153449. The reversal of 57153381 is 18335175.

57153381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 57153381 - 2² = 57153377 is a prime.

It is a super-2 number, since 2×57153381² = 6533017919462322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57153331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9525561 + ... + 9525566.

It is an arithmetic number, because the mean of its divisors is an integer number (19051128).

Almost surely, 2^57153381 is an apocalyptic number.

It is an amenable number.

57153381 is a deficient number, since it is larger than the sum of its proper divisors (19051131).

57153381 is a wasteful number, since it uses less digits than its factorization.

57153381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19051130.

The product of its digits is 12600, while the sum is 33.

The square root of 57153381 is about 7559.9855158591. The cubic root of 57153381 is about 385.1950010081.

The spelling of 57153381 in words is "fifty-seven million, one hundred fifty-three thousand, three hundred eighty-one".