145522012 has 24 divisors (see below), whose sum is σ = 268384032. Its totient is φ = 68904000.

The previous prime is 145522001. The next prime is 145522043. The reversal of 145522012 is 210225541.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1462 + ... + 17122.

It is an arithmetic number, because the mean of its divisors is an integer number (11182668).

Almost surely, 2^145522012 is an apocalyptic number.

It is an amenable number.

145522012 is a deficient number, since it is larger than the sum of its proper divisors (122862020).

145522012 is a wasteful number, since it uses less digits than its factorization.

145522012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15789 (or 15787 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 145522012 is about 12063.2504740638. The cubic root of 145522012 is about 525.9884772447.

Adding to 145522012 its reverse (210225541), we get a palindrome (355747553).

The spelling of 145522012 in words is "one hundred forty-five million, five hundred twenty-two thousand, twelve".