152005021 has 4 divisors (see below), whose sum is σ = 173720032. Its totient is φ = 130290012.

The previous prime is 152005019. The next prime is 152005027. The reversal of 152005021 is 120500251.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 152005021 - 2¹ = 152005019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 152004986 and 152005004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (152005027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10857495 + ... + 10857508.

It is an arithmetic number, because the mean of its divisors is an integer number (43430008).

Almost surely, 2^152005021 is an apocalyptic number.

It is an amenable number.

152005021 is a deficient number, since it is larger than the sum of its proper divisors (21715011).

152005021 is an equidigital number, since it uses as much as digits as its factorization.

152005021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21715010.

The product of its (nonzero) digits is 100, while the sum is 16.

The square root of 152005021 is about 12329.0316326952. The cubic root of 152005021 is about 533.6862060151.

Adding to 152005021 its reverse (120500251), we get a palindrome (272505272).

The spelling of 152005021 in words is "one hundred fifty-two million, five thousand, twenty-one".