257117054 has 8 divisors (see below), whose sum is σ = 386030448. Its totient is φ = 128440240.

The previous prime is 257117051. The next prime is 257117059. The reversal of 257117054 is 450711752.

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

It is a super-2 number, since 2×257117054² = 132218358915277832, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 257117054.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257117051) 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, 56402 + ... + 60789.

It is an arithmetic number, because the mean of its divisors is an integer number (48253806).

Almost surely, 2^257117054 is an apocalyptic number.

257117054 is a deficient number, since it is larger than the sum of its proper divisors (128913394).

257117054 is a wasteful number, since it uses less digits than its factorization.

257117054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118290.

The product of its (nonzero) digits is 9800, while the sum is 32.

The square root of 257117054 is about 16034.8699402271. The cubic root of 257117054 is about 635.8826290141.

The spelling of 257117054 in words is "two hundred fifty-seven million, one hundred seventeen thousand, fifty-four".