153487321 has 9 divisors (see below), whose sum is σ = 166376829. Its totient is φ = 141531936.

The previous prime is 153487319. The next prime is 153487333. The reversal of 153487321 is 123784351.

The square root of 153487321 is 12389.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 32046921 + 121440400 = 5661^2 + 11020^2 .

It is not a de Polignac number, because 153487321 - 2¹ = 153487319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (153487351) by changing a digit.

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 in 8 ways as a sum of consecutive naturals, for example, 160581 + ... + 161533.

Almost surely, 2^153487321 is an apocalyptic number.

153487321 is the 12389-th square number.

153487321 is the 6195-th centered octagonal number.

It is an amenable number.

153487321 is a deficient number, since it is larger than the sum of its proper divisors (12889508).

153487321 is an frugal number, since it uses more digits than its factorization.

153487321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1932 (or 966 counting only the distinct ones).

The product of its digits is 20160, while the sum is 34.

The cubic root of 153487321 is about 535.4153713713.

The spelling of 153487321 in words is "one hundred fifty-three million, four hundred eighty-seven thousand, three hundred twenty-one".