57129755 has 8 divisors (see below), whose sum is σ = 69079824. Its totient is φ = 45354400.

The previous prime is 57129731. The next prime is 57129763. The reversal of 57129755 is 55792175.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 57129755 - 2⁶ = 57129691 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 42956 + ... + 44265.

It is an arithmetic number, because the mean of its divisors is an integer number (8634978).

Almost surely, 2^57129755 is an apocalyptic number.

57129755 is a deficient number, since it is larger than the sum of its proper divisors (11950069).

57129755 is a wasteful number, since it uses less digits than its factorization.

57129755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87357.

The product of its digits is 110250, while the sum is 41.

The square root of 57129755 is about 7558.4227852112. The cubic root of 57129755 is about 385.1419165348.

The spelling of 57129755 in words is "fifty-seven million, one hundred twenty-nine thousand, seven hundred fifty-five".