145452554 has 12 divisors (see below), whose sum is σ = 236253366. Its totient is φ = 67131792.

The previous prime is 145452533. The next prime is 145452563. The reversal of 145452554 is 455254541.

It can be written as a sum of positive squares in 3 ways, for example, as 29997529 + 115455025 = 5477^2 + 10745^2 .

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 in 5 ways as a sum of consecutive naturals, for example, 214829 + ... + 215504.

Almost surely, 2^145452554 is an apocalyptic number.

145452554 is a deficient number, since it is larger than the sum of its proper divisors (90800812).

145452554 is a wasteful number, since it uses less digits than its factorization.

145452554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430361 (or 430348 counting only the distinct ones).

The product of its digits is 80000, while the sum is 35.

The square root of 145452554 is about 12060.3712214840. The cubic root of 145452554 is about 525.9047787460.

The spelling of 145452554 in words is "one hundred forty-five million, four hundred fifty-two thousand, five hundred fifty-four".