256453451 has 4 divisors (see below), whose sum is σ = 258325512. Its totient is φ = 254581392.

The previous prime is 256453447. The next prime is 256453481. The reversal of 256453451 is 154354652.

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 256453451 - 2² = 256453447 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (256453481) 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, 935825 + ... + 936098.

It is an arithmetic number, because the mean of its divisors is an integer number (64581378).

Almost surely, 2^256453451 is an apocalyptic number.

256453451 is a deficient number, since it is larger than the sum of its proper divisors (1872061).

256453451 is a wasteful number, since it uses less digits than its factorization.

256453451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1872060.

The product of its digits is 72000, while the sum is 35.

The square root of 256453451 is about 16014.1640743437. The cubic root of 256453451 is about 635.3350999617.

The spelling of 256453451 in words is "two hundred fifty-six million, four hundred fifty-three thousand, four hundred fifty-one".