145818287 has 2 divisors, whose sum is σ = 145818288. Its totient is φ = 145818286.

The previous prime is 145818247. The next prime is 145818307. The reversal of 145818287 is 782818541.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 145818287 - 2¹⁶ = 145752751 is a prime.

It is a super-2 number, since 2×145818287² = 42525945647228738, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145818247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72909143 + 72909144.

It is an arithmetic number, because the mean of its divisors is an integer number (72909144).

Almost surely, 2^145818287 is an apocalyptic number.

145818287 is a deficient number, since it is larger than the sum of its proper divisors (1).

145818287 is an equidigital number, since it uses as much as digits as its factorization.

145818287 is an evil number, because the sum of its binary digits is even.

The product of its digits is 143360, while the sum is 44.

The square root of 145818287 is about 12075.5242950358. The cubic root of 145818287 is about 526.3451966960.

The spelling of 145818287 in words is "one hundred forty-five million, eight hundred eighteen thousand, two hundred eighty-seven".