145415227 has 8 divisors (see below), whose sum is σ = 156326400. Its totient is φ = 134829864.

The previous prime is 145415201. The next prime is 145415243. The reversal of 145415227 is 722514541.

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

It is a cyclic number.

It is not a de Polignac number, because 145415227 - 2¹¹ = 145413179 is a prime.

It is a super-2 number, since 2×145415227² = 42291176486923058, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145415827) 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, 80527 + ... + 82312.

It is an arithmetic number, because the mean of its divisors is an integer number (19540800).

Almost surely, 2^145415227 is an apocalyptic number.

145415227 is a deficient number, since it is larger than the sum of its proper divisors (10911173).

145415227 is a wasteful number, since it uses less digits than its factorization.

145415227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162905.

The product of its digits is 11200, while the sum is 31.

The square root of 145415227 is about 12058.8236159254. The cubic root of 145415227 is about 525.8597878387.

Adding to 145415227 its reverse (722514541), we get a palindrome (867929768).

The spelling of 145415227 in words is "one hundred forty-five million, four hundred fifteen thousand, two hundred twenty-seven".