254556397 has 4 divisors (see below), whose sum is σ = 254588796. Its totient is φ = 254524000.

The previous prime is 254556391. The next prime is 254556451. The reversal of 254556397 is 793655452.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 21261321 + 233295076 = 4611^2 + 15274^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-254556397 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 (254556391) 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, 3897 + ... + 22897.

It is an arithmetic number, because the mean of its divisors is an integer number (63647199).

Almost surely, 2^254556397 is an apocalyptic number.

It is an amenable number.

254556397 is a deficient number, since it is larger than the sum of its proper divisors (32399).

254556397 is a wasteful number, since it uses less digits than its factorization.

254556397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32398.

The product of its digits is 1134000, while the sum is 46.

The square root of 254556397 is about 15954.8236279816. The cubic root of 254556397 is about 633.7646406187.

The spelling of 254556397 in words is "two hundred fifty-four million, five hundred fifty-six thousand, three hundred ninety-seven".