145504454 has 16 divisors (see below), whose sum is σ = 219829680. Its totient is φ = 72230400.

The previous prime is 145504453. The next prime is 145504481. The reversal of 145504454 is 454405541.

It is a super-2 number, since 2×145504454² = 42343092267676232, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 145504454.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145504453) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 335822 + ... + 336254.

It is an arithmetic number, because the mean of its divisors is an integer number (13739355).

Almost surely, 2^145504454 is an apocalyptic number.

145504454 is a deficient number, since it is larger than the sum of its proper divisors (74325226).

145504454 is a wasteful number, since it uses less digits than its factorization.

145504454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1255.

The product of its (nonzero) digits is 32000, while the sum is 32.

The square root of 145504454 is about 12062.5227046418. The cubic root of 145504454 is about 525.9673219638.

Adding to 145504454 its reverse (454405541), we get a palindrome (599909995).

The spelling of 145504454 in words is "one hundred forty-five million, five hundred four thousand, four hundred fifty-four".