145513203 has 16 divisors (see below), whose sum is σ = 220859136. Its totient is φ = 84355040.

The previous prime is 145513189. The next prime is 145513211. The reversal of 145513203 is 302315541.

It is not a de Polignac number, because 145513203 - 2⁶ = 145513139 is a prime.

It is not an unprimeable number, because it can be changed into a prime (145513103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 95100 + ... + 96617.

It is an arithmetic number, because the mean of its divisors is an integer number (13803696).

Almost surely, 2^145513203 is an apocalyptic number.

145513203 is a deficient number, since it is larger than the sum of its proper divisors (75345933).

145513203 is a wasteful number, since it uses less digits than its factorization.

145513203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191754.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 145513203 is about 12062.8853513577. The cubic root of 145513203 is about 525.9778636706.

Adding to 145513203 its reverse (302315541), we get a palindrome (447828744).

The spelling of 145513203 in words is "one hundred forty-five million, five hundred thirteen thousand, two hundred three".