152221287 has 8 divisors (see below), whose sum is σ = 203076720. Its totient is φ = 101423360.

The previous prime is 152221271. The next prime is 152221339. The reversal of 152221287 is 782122251.

152221287 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 152221287 - 2⁴ = 152221271 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (152221207) 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, 7764 + ... + 19097.

It is an arithmetic number, because the mean of its divisors is an integer number (25384590).

Almost surely, 2^152221287 is an apocalyptic number.

152221287 is a deficient number, since it is larger than the sum of its proper divisors (50855433).

152221287 is a wasteful number, since it uses less digits than its factorization.

152221287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28753.

The product of its digits is 4480, while the sum is 30.

The square root of 152221287 is about 12337.7991149151. The cubic root of 152221287 is about 533.9391877613.

The spelling of 152221287 in words is "one hundred fifty-two million, two hundred twenty-one thousand, two hundred eighty-seven".