1257546323 has 4 divisors (see below), whose sum is σ = 1371868728. Its totient is φ = 1143223920.

The previous prime is 1257546319. The next prime is 1257546337. The reversal of 1257546323 is 3236457521.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1257546323 - 2² = 1257546319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1257546313) 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, 57161186 + ... + 57161207.

It is an arithmetic number, because the mean of its divisors is an integer number (342967182).

Almost surely, 2^1257546323 is an apocalyptic number.

1257546323 is a deficient number, since it is larger than the sum of its proper divisors (114322405).

1257546323 is a wasteful number, since it uses less digits than its factorization.

1257546323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114322404.

The product of its digits is 151200, while the sum is 38.

The square root of 1257546323 is about 35461.8995966093. The cubic root of 1257546323 is about 1079.3807386681.

The spelling of 1257546323 in words is "one billion, two hundred fifty-seven million, five hundred forty-six thousand, three hundred twenty-three".