145224101 has 8 divisors (see below), whose sum is σ = 158584608. Its totient is φ = 131890000.

The previous prime is 145224073. The next prime is 145224133. The reversal of 145224101 is 101422541.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 145224101 - 2²⁶ = 78115237 is a prime.

It is a super-2 number, since 2×145224101² = 42180079022516402, 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 (145224601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5951 + ... + 18051.

It is an arithmetic number, because the mean of its divisors is an integer number (19823076).

Almost surely, 2^145224101 is an apocalyptic number.

145224101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

145224101 is a deficient number, since it is larger than the sum of its proper divisors (13360507).

145224101 is a wasteful number, since it uses less digits than its factorization.

145224101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13203.

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 145224101 is about 12050.8962737217. The cubic root of 145224101 is about 525.6292994983.

Adding to 145224101 its reverse (101422541), we get a palindrome (246646642).

The spelling of 145224101 in words is "one hundred forty-five million, two hundred twenty-four thousand, one hundred one".