145550434 has 4 divisors (see below), whose sum is σ = 218325654. Its totient is φ = 72775216.

The previous prime is 145550429. The next prime is 145550459. The reversal of 145550434 is 434055541.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 434055541 = 12781 ⋅33961.

It can be written as a sum of positive squares in only one way, i.e., 145274809 + 275625 = 12053^2 + 525^2 .

It is a junction number, because it is equal to n+sod(n) for n = 145550396 and 145550405.

It is an unprimeable number.

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, 36387607 + ... + 36387610.

Almost surely, 2^145550434 is an apocalyptic number.

145550434 is a deficient number, since it is larger than the sum of its proper divisors (72775220).

145550434 is an equidigital number, since it uses as much as digits as its factorization.

145550434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72775219.

The product of its (nonzero) digits is 24000, while the sum is 31.

The square root of 145550434 is about 12064.4284572457. The cubic root of 145550434 is about 526.0227187342.

The spelling of 145550434 in words is "one hundred forty-five million, five hundred fifty thousand, four hundred thirty-four".