145254622 has 4 divisors (see below), whose sum is σ = 217881936. Its totient is φ = 72627310.

The previous prime is 145254619. The next prime is 145254653. The reversal of 145254622 is 226452541.

145254622 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36313654 + ... + 36313657.

It is an arithmetic number, because the mean of its divisors is an integer number (54470484).

Almost surely, 2^145254622 is an apocalyptic number.

145254622 is a deficient number, since it is larger than the sum of its proper divisors (72627314).

145254622 is an equidigital number, since it uses as much as digits as its factorization.

145254622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72627313.

The product of its digits is 19200, while the sum is 31.

The square root of 145254622 is about 12052.1625445395. The cubic root of 145254622 is about 525.6661198516. Note that the first 3 decimals are identical.

The spelling of 145254622 in words is "one hundred forty-five million, two hundred fifty-four thousand, six hundred twenty-two".