145184251 has 2 divisors, whose sum is σ = 145184252. Its totient is φ = 145184250.

The previous prime is 145184227. The next prime is 145184261. The reversal of 145184251 is 152481541.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 145184251 - 2⁵ = 145184219 is a prime.

It is not a weakly prime, because it can be changed into another prime (145184201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72592125 + 72592126.

It is an arithmetic number, because the mean of its divisors is an integer number (72592126).

Almost surely, 2^145184251 is an apocalyptic number.

145184251 is a deficient number, since it is larger than the sum of its proper divisors (1).

145184251 is an equidigital number, since it uses as much as digits as its factorization.

145184251 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6400, while the sum is 31.

The square root of 145184251 is about 12049.2427562897. The cubic root of 145184251 is about 525.5812169288.

It can be divided in two parts, 14518 and 4251, that added together give a square (18769 = 137²).

The spelling of 145184251 in words is "one hundred forty-five million, one hundred eighty-four thousand, two hundred fifty-one".