254213987 has 2 divisors, whose sum is σ = 254213988. Its totient is φ = 254213986.

The previous prime is 254213983. The next prime is 254214017. The reversal of 254213987 is 789312452.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 254213987 - 2² = 254213983 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (254213983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127106993 + 127106994.

It is an arithmetic number, because the mean of its divisors is an integer number (127106994).

Almost surely, 2^254213987 is an apocalyptic number.

254213987 is a deficient number, since it is larger than the sum of its proper divisors (1).

254213987 is an equidigital number, since it uses as much as digits as its factorization.

254213987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120960, while the sum is 41.

The square root of 254213987 is about 15944.0894064227. The cubic root of 254213987 is about 633.4803490346.

The spelling of 254213987 in words is "two hundred fifty-four million, two hundred thirteen thousand, nine hundred eighty-seven".