257852893 has 4 divisors (see below), whose sum is σ = 259009408. Its totient is φ = 256696380.

The previous prime is 257852879. The next prime is 257852911. The reversal of 257852893 is 398258752.

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 257852893 - 2²¹ = 255755741 is a prime.

It is a super-2 number, since 2×257852893² = 132976228856938898, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257852873) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 577923 + ... + 578368.

It is an arithmetic number, because the mean of its divisors is an integer number (64752352).

Almost surely, 2^257852893 is an apocalyptic number.

It is an amenable number.

257852893 is a deficient number, since it is larger than the sum of its proper divisors (1156515).

257852893 is a wasteful number, since it uses less digits than its factorization.

257852893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1156514.

The product of its digits is 1209600, while the sum is 49.

The square root of 257852893 is about 16057.7985103812. The cubic root of 257852893 is about 636.4886585425.

The spelling of 257852893 in words is "two hundred fifty-seven million, eight hundred fifty-two thousand, eight hundred ninety-three".