145444487 has 4 divisors (see below), whose sum is σ = 153099480. Its totient is φ = 137789496.

The previous prime is 145444463. The next prime is 145444489. The reversal of 145444487 is 784444541.

It is a happy number.

145444487 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 784444541 = 2131 ⋅368111.

It is a cyclic number.

It is not a de Polignac number, because 145444487 - 2¹² = 145440391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145444489) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3827468 + ... + 3827505.

It is an arithmetic number, because the mean of its divisors is an integer number (38274870).

Almost surely, 2^145444487 is an apocalyptic number.

145444487 is a deficient number, since it is larger than the sum of its proper divisors (7654993).

145444487 is an equidigital number, since it uses as much as digits as its factorization.

145444487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7654992.

The product of its digits is 286720, while the sum is 41.

The square root of 145444487 is about 12060.0367744050. The cubic root of 145444487 is about 525.8950560973.

The spelling of 145444487 in words is "one hundred forty-five million, four hundred forty-four thousand, four hundred eighty-seven".