257199011 has 4 divisors (see below), whose sum is σ = 257232024. Its totient is φ = 257166000.

The previous prime is 257198987. The next prime is 257199013. The reversal of 257199011 is 110991752.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-257199011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (257199013) 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, 2396 + ... + 22806.

It is an arithmetic number, because the mean of its divisors is an integer number (64308006).

Almost surely, 2^257199011 is an apocalyptic number.

257199011 is a deficient number, since it is larger than the sum of its proper divisors (33013).

257199011 is a wasteful number, since it uses less digits than its factorization.

257199011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33012.

The product of its (nonzero) digits is 5670, while the sum is 35.

The square root of 257199011 is about 16037.4253232868. The cubic root of 257199011 is about 635.9501851402.

The spelling of 257199011 in words is "two hundred fifty-seven million, one hundred ninety-nine thousand, eleven".