145216253 has 32 divisors (see below), whose sum is σ = 188832000. Its totient is φ = 110835648.

The previous prime is 145216249. The next prime is 145216271. The reversal of 145216253 is 352612541.

It is not a de Polignac number, because 145216253 - 2² = 145216249 is a prime.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a nialpdrome in base 9.

It is a zygodrome in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145216243) 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 31 ways as a sum of consecutive naturals, for example, 128750 + ... + 129872.

It is an arithmetic number, because the mean of its divisors is an integer number (5901000).

Almost surely, 2^145216253 is an apocalyptic number.

145216253 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

145216253 is a deficient number, since it is larger than the sum of its proper divisors (43615747).

145216253 is a wasteful number, since it uses less digits than its factorization.

145216253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1186 (or 1172 counting only the distinct ones).

The product of its digits is 7200, while the sum is 29.

The square root of 145216253 is about 12050.5706503883. The cubic root of 145216253 is about 525.6198308839.

Adding to 145216253 its reverse (352612541), we get a palindrome (497828794).

The spelling of 145216253 in words is "one hundred forty-five million, two hundred sixteen thousand, two hundred fifty-three".