145548251 has 2 divisors, whose sum is σ = 145548252. Its totient is φ = 145548250.

The previous prime is 145548241. The next prime is 145548253. The reversal of 145548251 is 152845541.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 145548251 - 2¹⁸ = 145286107 is a prime.

Together with 145548253, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p_8207693 and since 145548251 and 8207693 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (145548253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72774125 + 72774126.

It is an arithmetic number, because the mean of its divisors is an integer number (72774126).

Almost surely, 2^145548251 is an apocalyptic number.

145548251 is a deficient number, since it is larger than the sum of its proper divisors (1).

145548251 is an equidigital number, since it uses as much as digits as its factorization.

145548251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32000, while the sum is 35.

The square root of 145548251 is about 12064.3379843239. The cubic root of 145548251 is about 526.0200889165.

The spelling of 145548251 in words is "one hundred forty-five million, five hundred forty-eight thousand, two hundred fifty-one".