145711487 has 2 divisors, whose sum is σ = 145711488. Its totient is φ = 145711486.

The previous prime is 145711483. The next prime is 145711507. The reversal of 145711487 is 784117541.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 145711487 - 2² = 145711483 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 145711487.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145711481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72855743 + 72855744.

It is an arithmetic number, because the mean of its divisors is an integer number (72855744).

Almost surely, 2^145711487 is an apocalyptic number.

145711487 is a deficient number, since it is larger than the sum of its proper divisors (1).

145711487 is an equidigital number, since it uses as much as digits as its factorization.

145711487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31360, while the sum is 38.

The square root of 145711487 is about 12071.1013167813. The cubic root of 145711487 is about 526.2166636710.

The spelling of 145711487 in words is "one hundred forty-five million, seven hundred eleven thousand, four hundred eighty-seven".