57321255 has 32 divisors (see below), whose sum is σ = 95405760. Its totient is φ = 29352960.

The previous prime is 57321241. The next prime is 57321269. The reversal of 57321255 is 55212375.

It is an interprime number because it is at equal distance from previous prime (57321241) and next prime (57321269).

It is not a de Polignac number, because 57321255 - 2⁵ = 57321223 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 135945 + ... + 136365.

It is an arithmetic number, because the mean of its divisors is an integer number (2981430).

Almost surely, 2^57321255 is an apocalyptic number.

57321255 is a deficient number, since it is larger than the sum of its proper divisors (38084505).

57321255 is a wasteful number, since it uses less digits than its factorization.

57321255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 771.

The product of its digits is 10500, while the sum is 30.

The square root of 57321255 is about 7571.0801739250. The cubic root of 57321255 is about 385.5717708849.

The spelling of 57321255 in words is "fifty-seven million, three hundred twenty-one thousand, two hundred fifty-five".