152023221 has 24 divisors (see below), whose sum is σ = 251282304. Its totient is φ = 86758560.

The previous prime is 152023211. The next prime is 152023241. The reversal of 152023221 is 122320251.

152023221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 152023221 - 2⁷ = 152023093 is a prime.

It is a super-2 number, since 2×152023221² = 46222119446429682, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 152023194 and 152023203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (152023211) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 94395 + ... + 95991.

It is an arithmetic number, because the mean of its divisors is an integer number (10470096).

Almost surely, 2^152023221 is an apocalyptic number.

It is an amenable number.

152023221 is a deficient number, since it is larger than the sum of its proper divisors (99259083).

152023221 is a wasteful number, since it uses less digits than its factorization.

152023221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3121 (or 3118 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 152023221 is about 12329.7697058785. The cubic root of 152023221 is about 533.7075050951.

Adding to 152023221 its reverse (122320251), we get a palindrome (274343472).

The spelling of 152023221 in words is "one hundred fifty-two million, twenty-three thousand, two hundred twenty-one".