152181401 has 2 divisors, whose sum is σ = 152181402. Its totient is φ = 152181400.

The previous prime is 152181373. The next prime is 152181479. The reversal of 152181401 is 104181251.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 145926400 + 6255001 = 12080^2 + 2501^2 .

It is a cyclic number.

It is not a de Polignac number, because 152181401 - 2¹⁴ = 152165017 is a prime.

It is not a weakly prime, because it can be changed into another prime (152181301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76090700 + 76090701.

It is an arithmetic number, because the mean of its divisors is an integer number (76090701).

Almost surely, 2^152181401 is an apocalyptic number.

It is an amenable number.

152181401 is a deficient number, since it is larger than the sum of its proper divisors (1).

152181401 is an equidigital number, since it uses as much as digits as its factorization.

152181401 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 23.

The square root of 152181401 is about 12336.1825943036. The cubic root of 152181401 is about 533.8925482949.

The spelling of 152181401 in words is "one hundred fifty-two million, one hundred eighty-one thousand, four hundred one".