145503101 has 2 divisors, whose sum is σ = 145503102. Its totient is φ = 145503100.

The previous prime is 145503079. The next prime is 145503109. The reversal of 145503101 is 101305541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 143880025 + 1623076 = 11995^2 + 1274^2 .

It is a cyclic number.

It is not a de Polignac number, because 145503101 - 2¹⁴ = 145486717 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145503109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72751550 + 72751551.

It is an arithmetic number, because the mean of its divisors is an integer number (72751551).

Almost surely, 2^145503101 is an apocalyptic number.

It is an amenable number.

145503101 is a deficient number, since it is larger than the sum of its proper divisors (1).

145503101 is an equidigital number, since it uses as much as digits as its factorization.

145503101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 145503101 is about 12062.4666217155. The cubic root of 145503101 is about 525.9656916907.

Adding to 145503101 its reverse (101305541), we get a palindrome (246808642).

The spelling of 145503101 in words is "one hundred forty-five million, five hundred three thousand, one hundred one".