145456222 has 8 divisors (see below), whose sum is σ = 220946400. Its totient is φ = 71807424.

The previous prime is 145456219. The next prime is 145456231. The reversal of 145456222 is 222654541.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 460147 + ... + 460462.

It is an arithmetic number, because the mean of its divisors is an integer number (27618300).

Almost surely, 2^145456222 is an apocalyptic number.

145456222 is a deficient number, since it is larger than the sum of its proper divisors (75490178).

145456222 is an equidigital number, since it uses as much as digits as its factorization.

145456222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 920690.

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

The square root of 145456222 is about 12060.5232888130. The cubic root of 145456222 is about 525.9091994373.

The spelling of 145456222 in words is "one hundred forty-five million, four hundred fifty-six thousand, two hundred twenty-two".