145423552 has 28 divisors (see below), whose sum is σ = 289681920. Its totient is φ = 72432896.

The previous prime is 145423543. The next prime is 145423561. The reversal of 145423552 is 255324541.

It is an interprime number because it is at equal distance from previous prime (145423543) and next prime (145423561).

It is a super-2 number, since 2×145423552² = 42296018952593408, which contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 12993 + ... + 21439.

Almost surely, 2^145423552 is an apocalyptic number.

It is an amenable number.

145423552 is a deficient number, since it is larger than the sum of its proper divisors (144258368).

145423552 is an equidigital number, since it uses as much as digits as its factorization.

145423552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8728 (or 8718 counting only the distinct ones).

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

The square root of 145423552 is about 12059.1687939095. The cubic root of 145423552 is about 525.8698227786.

The spelling of 145423552 in words is "one hundred forty-five million, four hundred twenty-three thousand, five hundred fifty-two".