145265446 has 4 divisors (see below), whose sum is σ = 217898172. Its totient is φ = 72632722.

The previous prime is 145265429. The next prime is 145265453. The reversal of 145265446 is 644562541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 644562541 = 7 ⋅92080363.

It is a super-2 number, since 2×145265446² = 42204099603157832, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36316360 + ... + 36316363.

It is an arithmetic number, because the mean of its divisors is an integer number (54474543).

Almost surely, 2^145265446 is an apocalyptic number.

145265446 is a deficient number, since it is larger than the sum of its proper divisors (72632726).

145265446 is an equidigital number, since it uses as much as digits as its factorization.

145265446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72632725.

The product of its digits is 115200, while the sum is 37.

The square root of 145265446 is about 12052.6115842169. The cubic root of 145265446 is about 525.6791766220.

The spelling of 145265446 in words is "one hundred forty-five million, two hundred sixty-five thousand, four hundred forty-six".