145078226 has 4 divisors (see below), whose sum is σ = 217617342. Its totient is φ = 72539112.

The previous prime is 145078217. The next prime is 145078231. The reversal of 145078226 is 622870541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 622870541 = 547 ⋅1138703.

It can be written as a sum of positive squares in only one way, i.e., 136072225 + 9006001 = 11665^2 + 3001^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36269555 + ... + 36269558.

Almost surely, 2^145078226 is an apocalyptic number.

145078226 is a deficient number, since it is larger than the sum of its proper divisors (72539116).

145078226 is an equidigital number, since it uses as much as digits as its factorization.

145078226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72539115.

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 145078226 is about 12044.8422986771. The cubic root of 145078226 is about 525.4532454752.

The spelling of 145078226 in words is "one hundred forty-five million, seventy-eight thousand, two hundred twenty-six".