152389221 has 8 divisors (see below), whose sum is σ = 205158720. Its totient is φ = 100606272.

The previous prime is 152389219. The next prime is 152389297. The reversal of 152389221 is 122983251.

It is a happy number.

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

It is not a de Polignac number, because 152389221 - 2¹ = 152389219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (152389121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 246276 + ... + 246893.

It is an arithmetic number, because the mean of its divisors is an integer number (25644840).

Almost surely, 2^152389221 is an apocalyptic number.

It is an amenable number.

152389221 is a deficient number, since it is larger than the sum of its proper divisors (52769499).

152389221 is a wasteful number, since it uses less digits than its factorization.

152389221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493275.

The product of its digits is 8640, while the sum is 33.

The square root of 152389221 is about 12344.6029097740. The cubic root of 152389221 is about 534.1354669009.

The spelling of 152389221 in words is "one hundred fifty-two million, three hundred eighty-nine thousand, two hundred twenty-one".