254012191 has 4 divisors (see below), whose sum is σ = 255570712. Its totient is φ = 252453672.

The previous prime is 254012167. The next prime is 254012201. The reversal of 254012191 is 191210452.

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 254012191 - 2¹⁷ = 253881119 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 (254012491) 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, 779016 + ... + 779341.

It is an arithmetic number, because the mean of its divisors is an integer number (63892678).

Almost surely, 2^254012191 is an apocalyptic number.

254012191 is a deficient number, since it is larger than the sum of its proper divisors (1558521).

254012191 is a wasteful number, since it uses less digits than its factorization.

254012191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1558520.

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 254012191 is about 15937.7599116061. The cubic root of 254012191 is about 633.3126849839.

The spelling of 254012191 in words is "two hundred fifty-four million, twelve thousand, one hundred ninety-one".