145223502 has 16 divisors (see below), whose sum is σ = 291008640. Its totient is φ = 48314232.

The previous prime is 145223501. The next prime is 145223521. The reversal of 145223502 is 205322541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145223501) 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 7 ways as a sum of consecutive naturals, for example, 20002 + ... + 26277.

It is an arithmetic number, because the mean of its divisors is an integer number (18188040).

Almost surely, 2^145223502 is an apocalyptic number.

145223502 is an abundant number, since it is smaller than the sum of its proper divisors (145785138).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

145223502 is a wasteful number, since it uses less digits than its factorization.

145223502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46807.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 145223502 is about 12050.8714207729. The cubic root of 145223502 is about 525.6285768166.

The spelling of 145223502 in words is "one hundred forty-five million, two hundred twenty-three thousand, five hundred two".