145148887 has 4 divisors (see below), whose sum is σ = 156314200. Its totient is φ = 133983576.

The previous prime is 145148881. The next prime is 145148947. The reversal of 145148887 is 788841541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 788841541 = 139 ⋅5675119.

It is a cyclic number.

It is not a de Polignac number, because 145148887 - 2³ = 145148879 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 (145148881) 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, 5582637 + ... + 5582662.

It is an arithmetic number, because the mean of its divisors is an integer number (39078550).

Almost surely, 2^145148887 is an apocalyptic number.

145148887 is a deficient number, since it is larger than the sum of its proper divisors (11165313).

145148887 is a wasteful number, since it uses less digits than its factorization.

145148887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11165312.

The product of its digits is 286720, while the sum is 46.

The square root of 145148887 is about 12047.7751888056. The cubic root of 145148887 is about 525.5385397483.

The spelling of 145148887 in words is "one hundred forty-five million, one hundred forty-eight thousand, eight hundred eighty-seven".