145252447 has 2 divisors, whose sum is σ = 145252448. Its totient is φ = 145252446.

The previous prime is 145252427. The next prime is 145252483. The reversal of 145252447 is 744252541.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 145252447 - 2¹⁹ = 144728159 is a prime.

It is equal to p_8191960 and since 145252447 and 8191960 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145252427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72626223 + 72626224.

It is an arithmetic number, because the mean of its divisors is an integer number (72626224).

Almost surely, 2^145252447 is an apocalyptic number.

145252447 is a deficient number, since it is larger than the sum of its proper divisors (1).

145252447 is an equidigital number, since it uses as much as digits as its factorization.

145252447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 44800, while the sum is 34.

The square root of 145252447 is about 12052.0723114326. The cubic root of 145252447 is about 525.6634961152.

The spelling of 145252447 in words is "one hundred forty-five million, two hundred fifty-two thousand, four hundred forty-seven".