147221572 has 12 divisors (see below), whose sum is σ = 259492240. Its totient is φ = 73080936.

The previous prime is 147221537. The next prime is 147221629. The reversal of 147221572 is 275122741.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131838 + ... + 132949.

Almost surely, 2^147221572 is an apocalyptic number.

It is an amenable number.

147221572 is a deficient number, since it is larger than the sum of its proper divisors (112270668).

147221572 is a wasteful number, since it uses less digits than its factorization.

147221572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264930 (or 264928 counting only the distinct ones).

The product of its digits is 7840, while the sum is 31.

The square root of 147221572 is about 12133.4896876373. The cubic root of 147221572 is about 528.0282401868.

The spelling of 147221572 in words is "one hundred forty-seven million, two hundred twenty-one thousand, five hundred seventy-two".