145404452 has 12 divisors (see below), whose sum is σ = 254563596. Its totient is φ = 72672000.

The previous prime is 145404443. The next prime is 145404461. The reversal of 145404452 is 254404541.

It is an interprime number because it is at equal distance from previous prime (145404443) and next prime (145404461).

It can be written as a sum of positive squares in 2 ways, for example, as 61058596 + 84345856 = 7814^2 + 9184^2 .

It is a super-2 number, since 2×145404452² = 42284909322840608, which contains 22 as substring.

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 in 3 ways as a sum of consecutive naturals, for example, 5948 + ... + 18060.

It is an arithmetic number, because the mean of its divisors is an integer number (21213633).

Almost surely, 2^145404452 is an apocalyptic number.

It is an amenable number.

145404452 is a deficient number, since it is larger than the sum of its proper divisors (109159144).

145404452 is a wasteful number, since it uses less digits than its factorization.

145404452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15118 (or 15116 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 29.

The square root of 145404452 is about 12058.3768393594. The cubic root of 145404452 is about 525.8467991045.

Adding to 145404452 its reverse (254404541), we get a palindrome (399808993).

The spelling of 145404452 in words is "one hundred forty-five million, four hundred four thousand, four hundred fifty-two".