152023561 has 2 divisors, whose sum is σ = 152023562. Its totient is φ = 152023560.

The previous prime is 152023549. The next prime is 152023609. The reversal of 152023561 is 165320251.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 94945536 + 57078025 = 9744^2 + 7555^2 .

It is a cyclic number.

It is not a de Polignac number, because 152023561 - 2⁷ = 152023433 is a prime.

It is a super-2 number, since 2×152023561² = 46222326198241442, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (152023661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76011780 + 76011781.

It is an arithmetic number, because the mean of its divisors is an integer number (76011781).

Almost surely, 2^152023561 is an apocalyptic number.

It is an amenable number.

152023561 is a deficient number, since it is larger than the sum of its proper divisors (1).

152023561 is an equidigital number, since it uses as much as digits as its factorization.

152023561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 152023561 is about 12329.7834936385. The cubic root of 152023561 is about 533.7079029738.

The spelling of 152023561 in words is "one hundred fifty-two million, twenty-three thousand, five hundred sixty-one".