145719487 has 2 divisors, whose sum is σ = 145719488. Its totient is φ = 145719486.

The previous prime is 145719479. The next prime is 145719491. The reversal of 145719487 is 784917541.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 145719487 - 2³ = 145719479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145719407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72859743 + 72859744.

It is an arithmetic number, because the mean of its divisors is an integer number (72859744).

Almost surely, 2^145719487 is an apocalyptic number.

145719487 is a deficient number, since it is larger than the sum of its proper divisors (1).

145719487 is an equidigital number, since it uses as much as digits as its factorization.

145719487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 282240, while the sum is 46.

The square root of 145719487 is about 12071.4326821633. The cubic root of 145719487 is about 526.2262937886.

The spelling of 145719487 in words is "one hundred forty-five million, seven hundred nineteen thousand, four hundred eighty-seven".