145387 has 4 divisors (see below), whose sum is σ = 158616. Its totient is φ = 132160.

The previous prime is 145381. The next prime is 145391. The reversal of 145387 is 783541.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 145387 - 2⁷ = 145259 is a prime.

It is a super-2 number, since 2×145387² = 42274759538, which contains 22 as substring.

It is a Duffinian number.

145387 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (145381) 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, 6598 + ... + 6619.

It is an arithmetic number, because the mean of its divisors is an integer number (39654).

2¹⁴⁵³⁸⁷ is an apocalyptic number.

145387 is a deficient number, since it is larger than the sum of its proper divisors (13229).

145387 is a wasteful number, since it uses less digits than its factorization.

145387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13228.

The product of its digits is 3360, while the sum is 28.

The square root of 145387 is about 381.2964725774. The cubic root of 145387 is about 52.5825760213.

It can be divided in two parts, 1453 and 87, that added together give a triangular number (1540 = T₅₅).

The spelling of 145387 in words is "one hundred forty-five thousand, three hundred eighty-seven".