145291103 has 4 divisors (see below), whose sum is σ = 146351760. Its totient is φ = 144230448.

The previous prime is 145291067. The next prime is 145291117. The reversal of 145291103 is 301192541.

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 145291103 - 2¹² = 145287007 is a prime.

It is a super-2 number, since 2×145291103² = 42219009221913218, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145291303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 530123 + ... + 530396.

It is an arithmetic number, because the mean of its divisors is an integer number (36587940).

Almost surely, 2^145291103 is an apocalyptic number.

145291103 is a deficient number, since it is larger than the sum of its proper divisors (1060657).

145291103 is a wasteful number, since it uses less digits than its factorization.

145291103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1060656.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 145291103 is about 12053.6759123514. The cubic root of 145291103 is about 525.7101235472.

The spelling of 145291103 in words is "one hundred forty-five million, two hundred ninety-one thousand, one hundred three".