145503118 has 4 divisors (see below), whose sum is σ = 218254680. Its totient is φ = 72751558.

The previous prime is 145503109. The next prime is 145503131. The reversal of 145503118 is 811305541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 811305541 = 5927 ⋅136883.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 36375778 + ... + 36375781.

It is an arithmetic number, because the mean of its divisors is an integer number (54563670).

Almost surely, 2^145503118 is an apocalyptic number.

145503118 is a deficient number, since it is larger than the sum of its proper divisors (72751562).

145503118 is an equidigital number, since it uses as much as digits as its factorization.

145503118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72751561.

The product of its (nonzero) digits is 2400, while the sum is 28.

The square root of 145503118 is about 12062.4673263806. The cubic root of 145503118 is about 525.9657121746.

Adding to 145503118 its reverse (811305541), we get a palindrome (956808659).

The spelling of 145503118 in words is "one hundred forty-five million, five hundred three thousand, one hundred eighteen".