145271603 has 4 divisors (see below), whose sum is σ = 146604480. Its totient is φ = 143938728.

The previous prime is 145271593. The next prime is 145271639. The reversal of 145271603 is 306172541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 306172541 = 181 ⋅1691561.

It is a cyclic number.

It is not a de Polignac number, because 145271603 - 2¹⁶ = 145206067 is a prime.

It is a super-2 number, since 2×145271603² = 42207677276379218, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145261603) 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, 666275 + ... + 666492.

It is an arithmetic number, because the mean of its divisors is an integer number (36651120).

Almost surely, 2^145271603 is an apocalyptic number.

145271603 is a deficient number, since it is larger than the sum of its proper divisors (1332877).

145271603 is a wasteful number, since it uses less digits than its factorization.

145271603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1332876.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 145271603 is about 12052.8670033316. The cubic root of 145271603 is about 525.6866033961.

The spelling of 145271603 in words is "one hundred forty-five million, two hundred seventy-one thousand, six hundred three".