145543451 has 2 divisors, whose sum is σ = 145543452. Its totient is φ = 145543450.

The previous prime is 145543427. The next prime is 145543487. The reversal of 145543451 is 154345541.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145543451 is a prime.

It is a super-2 number, since 2×145543451² = 42365792257978802, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (165543451) 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, 72771725 + 72771726.

It is an arithmetic number, because the mean of its divisors is an integer number (72771726).

Almost surely, 2^145543451 is an apocalyptic number.

145543451 is a deficient number, since it is larger than the sum of its proper divisors (1).

145543451 is an equidigital number, since it uses as much as digits as its factorization.

145543451 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24000, while the sum is 32.

The square root of 145543451 is about 12064.1390492650. The cubic root of 145543451 is about 526.0143063572.

Adding to 145543451 its reverse (154345541), we get a palindrome (299888992).

The spelling of 145543451 in words is "one hundred forty-five million, five hundred forty-three thousand, four hundred fifty-one".