57163261 has 8 divisors (see below), whose sum is σ = 59587040. Its totient is φ = 54785808.

The previous prime is 57163259. The next prime is 57163277. The reversal of 57163261 is 16236175.

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

It is a cyclic number.

It is not a de Polignac number, because 57163261 - 2¹ = 57163259 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57163201) 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 7 ways as a sum of consecutive naturals, for example, 9051 + ... + 14008.

It is an arithmetic number, because the mean of its divisors is an integer number (7448380).

Almost surely, 2^57163261 is an apocalyptic number.

It is an amenable number.

57163261 is a deficient number, since it is larger than the sum of its proper divisors (2423779).

57163261 is a wasteful number, since it uses less digits than its factorization.

57163261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23163.

The product of its digits is 7560, while the sum is 31.

The square root of 57163261 is about 7560.6389280272. The cubic root of 57163261 is about 385.2171957133.

The spelling of 57163261 in words is "fifty-seven million, one hundred sixty-three thousand, two hundred sixty-one".