145863211 has 4 divisors (see below), whose sum is σ = 157083472. Its totient is φ = 134642952.

The previous prime is 145863203. The next prime is 145863229. The reversal of 145863211 is 112368541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 112368541 = 2633 ⋅42677.

It is a cyclic number.

It is not a de Polignac number, because 145863211 - 2³ = 145863203 is a prime.

It is not an unprimeable number, because it can be changed into a prime (145863241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5610111 + ... + 5610136.

It is an arithmetic number, because the mean of its divisors is an integer number (39270868).

Almost surely, 2^145863211 is an apocalyptic number.

145863211 is a deficient number, since it is larger than the sum of its proper divisors (11220261).

145863211 is a wasteful number, since it uses less digits than its factorization.

145863211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11220260.

The product of its digits is 5760, while the sum is 31.

The square root of 145863211 is about 12077.3842780629. The cubic root of 145863211 is about 526.3992436524.

The spelling of 145863211 in words is "one hundred forty-five million, eight hundred sixty-three thousand, two hundred eleven".