254151643 has 4 divisors (see below), whose sum is σ = 256527000. Its totient is φ = 251776288.

The previous prime is 254151637. The next prime is 254151647. The reversal of 254151643 is 346151452.

It is a happy number.

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 254151643 - 2¹³ = 254143451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (254151647) 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, 1187518 + ... + 1187731.

It is an arithmetic number, because the mean of its divisors is an integer number (64131750).

Almost surely, 2^254151643 is an apocalyptic number.

254151643 is a deficient number, since it is larger than the sum of its proper divisors (2375357).

254151643 is a wasteful number, since it uses less digits than its factorization.

254151643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2375356.

The product of its digits is 14400, while the sum is 31.

The square root of 254151643 is about 15942.1342046791. The cubic root of 254151643 is about 633.4285594271.

The spelling of 254151643 in words is "two hundred fifty-four million, one hundred fifty-one thousand, six hundred forty-three".