257461933 has 4 divisors (see below), whose sum is σ = 260563968. Its totient is φ = 254359900.

The previous prime is 257461921. The next prime is 257461937. The reversal of 257461933 is 339164752.

It is a happy number.

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 257461933 - 2¹³ = 257453741 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 (257461937) 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, 1550893 + ... + 1551058.

It is an arithmetic number, because the mean of its divisors is an integer number (65140992).

Almost surely, 2^257461933 is an apocalyptic number.

It is an amenable number.

257461933 is a deficient number, since it is larger than the sum of its proper divisors (3102035).

257461933 is an equidigital number, since it uses as much as digits as its factorization.

257461933 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3102034.

The product of its digits is 136080, while the sum is 40.

The square root of 257461933 is about 16045.6203681877. The cubic root of 257461933 is about 636.1668116233.

The spelling of 257461933 in words is "two hundred fifty-seven million, four hundred sixty-one thousand, nine hundred thirty-three".