257053999 has 8 divisors (see below), whose sum is σ = 266099760. Its totient is φ = 248020416.

The previous prime is 257053967. The next prime is 257054027. The reversal of 257053999 is 999350752.

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 257053999 - 2⁵ = 257053967 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 (257053919) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69747 + ... + 73339.

It is an arithmetic number, because the mean of its divisors is an integer number (33262470).

Almost surely, 2^257053999 is an apocalyptic number.

257053999 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

257053999 is a deficient number, since it is larger than the sum of its proper divisors (9045761).

257053999 is a wasteful number, since it uses less digits than its factorization.

257053999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6089.

The product of its (nonzero) digits is 765450, while the sum is 49.

The square root of 257053999 is about 16032.9036359606. The cubic root of 257053999 is about 635.8306437975.

The spelling of 257053999 in words is "two hundred fifty-seven million, fifty-three thousand, nine hundred ninety-nine".