254503987 has 2 divisors, whose sum is σ = 254503988. Its totient is φ = 254503986.

The previous prime is 254503939. The next prime is 254504009. The reversal of 254503987 is 789305452.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-254503987 is a prime.

It is not a weakly prime, because it can be changed into another prime (254503927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127251993 + 127251994.

It is an arithmetic number, because the mean of its divisors is an integer number (127251994).

Almost surely, 2^254503987 is an apocalyptic number.

254503987 is a deficient number, since it is larger than the sum of its proper divisors (1).

254503987 is an equidigital number, since it uses as much as digits as its factorization.

254503987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 302400, while the sum is 43.

The square root of 254503987 is about 15953.1810934371. The cubic root of 254503987 is about 633.7211428777.

The spelling of 254503987 in words is "two hundred fifty-four million, five hundred three thousand, nine hundred eighty-seven".