145280893 has 2 divisors, whose sum is σ = 145280894. Its totient is φ = 145280892.

The previous prime is 145280887. The next prime is 145280899. The reversal of 145280893 is 398082541.

It is a balanced prime because it is at equal distance from previous prime (145280887) and next prime (145280899).

It can be written as a sum of positive squares in only one way, i.e., 145274809 + 6084 = 12053^2 + 78^2 .

It is an emirp because it is prime and its reverse (398082541) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 145280893 - 2¹⁷ = 145149821 is a prime.

It is a super-2 number, since 2×145280893² = 42213075741754898, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145280899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72640446 + 72640447.

It is an arithmetic number, because the mean of its divisors is an integer number (72640447).

Almost surely, 2^145280893 is an apocalyptic number.

It is an amenable number.

145280893 is a deficient number, since it is larger than the sum of its proper divisors (1).

145280893 is an equidigital number, since it uses as much as digits as its factorization.

145280893 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69120, while the sum is 40.

The square root of 145280893 is about 12053.2523826559. The cubic root of 145280893 is about 525.6978088998.

The spelling of 145280893 in words is "one hundred forty-five million, two hundred eighty thousand, eight hundred ninety-three".