152400181 has 2 divisors, whose sum is σ = 152400182. Its totient is φ = 152400180.

The previous prime is 152400163. The next prime is 152400211. The reversal of 152400181 is 181004251.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 152399025 + 1156 = 12345^2 + 34^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-152400181 is a prime.

It is a super-2 number, since 2×152400181² = 46451630337665522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (152404181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76200090 + 76200091.

It is an arithmetic number, because the mean of its divisors is an integer number (76200091).

Almost surely, 2^152400181 is an apocalyptic number.

It is an amenable number.

152400181 is a deficient number, since it is larger than the sum of its proper divisors (1).

152400181 is an equidigital number, since it uses as much as digits as its factorization.

152400181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 320, while the sum is 22.

The square root of 152400181 is about 12345.0468204863. The cubic root of 152400181 is about 534.1482717969.

The spelling of 152400181 in words is "one hundred fifty-two million, four hundred thousand, one hundred eighty-one".