257063761 has 4 divisors (see below), whose sum is σ = 263042032. Its totient is φ = 251085492.

The previous prime is 257063731. The next prime is 257063771. The reversal of 257063761 is 167360752.

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 257063761 - 2¹³ = 257055569 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 257063761.

It is not an unprimeable number, because it can be changed into a prime (257063701) 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, 2989071 + ... + 2989156.

It is an arithmetic number, because the mean of its divisors is an integer number (65760508).

Almost surely, 2^257063761 is an apocalyptic number.

It is an amenable number.

257063761 is a deficient number, since it is larger than the sum of its proper divisors (5978271).

257063761 is an equidigital number, since it uses as much as digits as its factorization.

257063761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5978270.

The product of its (nonzero) digits is 52920, while the sum is 37.

The square root of 257063761 is about 16033.2080695037. The cubic root of 257063761 is about 635.8386925605.

The spelling of 257063761 in words is "two hundred fifty-seven million, sixty-three thousand, seven hundred sixty-one".