57143290 has 32 divisors (see below), whose sum is σ = 109653264. Its totient is φ = 21365760.

The previous prime is 57143249. The next prime is 57143291. The reversal of 57143290 is 9234175.

It can be written as a sum of positive squares in 8 ways, for example, as 42497361 + 14645929 = 6519^2 + 3827^2 .

It is not an unprimeable number, because it can be changed into a prime (57143291) 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, 25620 + ... + 27760.

Almost surely, 2^57143290 is an apocalyptic number.

57143290 is a deficient number, since it is larger than the sum of its proper divisors (52509974).

57143290 is a wasteful number, since it uses less digits than its factorization.

57143290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2322.

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

The square root of 57143290 is about 7559.3180909392. The cubic root of 57143290 is about 385.1723296661.

The spelling of 57143290 in words is "fifty-seven million, one hundred forty-three thousand, two hundred ninety".