145215005 has 32 divisors (see below), whose sum is σ = 203965440. Its totient is φ = 98288640.

The previous prime is 145215001. The next prime is 145215019. The reversal of 145215005 is 500512541.

It is a happy number.

It is not a de Polignac number, because 145215005 - 2² = 145215001 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145215001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36389 + ... + 40181.

It is an arithmetic number, because the mean of its divisors is an integer number (6373920).

Almost surely, 2^145215005 is an apocalyptic number.

It is an amenable number.

145215005 is a deficient number, since it is larger than the sum of its proper divisors (58750435).

145215005 is a wasteful number, since it uses less digits than its factorization.

145215005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3861.

The product of its (nonzero) digits is 1000, while the sum is 23.

The square root of 145215005 is about 12050.5188684969. The cubic root of 145215005 is about 525.6183251401.

Adding to 145215005 its reverse (500512541), we get a palindrome (645727546).

The spelling of 145215005 in words is "one hundred forty-five million, two hundred fifteen thousand, five".