152081021 has 2 divisors, whose sum is σ = 152081022. Its totient is φ = 152081020.

The previous prime is 152081011. The next prime is 152081081. The reversal of 152081021 is 120180251.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 108388921 + 43692100 = 10411^2 + 6610^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-152081021 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 152080984 and 152081002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (152081011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76040510 + 76040511.

It is an arithmetic number, because the mean of its divisors is an integer number (76040511).

Almost surely, 2^152081021 is an apocalyptic number.

It is an amenable number.

152081021 is a deficient number, since it is larger than the sum of its proper divisors (1).

152081021 is an equidigital number, since it uses as much as digits as its factorization.

152081021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 160, while the sum is 20.

The square root of 152081021 is about 12332.1134036304. The cubic root of 152081021 is about 533.7751359584.

The spelling of 152081021 in words is "one hundred fifty-two million, eighty-one thousand, twenty-one".