145204451 has 8 divisors (see below), whose sum is σ = 173163264. Its totient is φ = 119049480.

The previous prime is 145204447. The next prime is 145204453. The reversal of 145204451 is 154402541.

145204451 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 145204451 - 2² = 145204447 is a prime.

It is a super-2 number, since 2×145204451² = 42168665180422802, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 145204451.

It is not an unprimeable number, because it can be changed into a prime (145204453) 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, 450785 + ... + 451106.

It is an arithmetic number, because the mean of its divisors is an integer number (21645408).

Almost surely, 2^145204451 is an apocalyptic number.

145204451 is a deficient number, since it is larger than the sum of its proper divisors (27958813).

145204451 is an equidigital number, since it uses as much as digits as its factorization.

145204451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 901921.

The product of its (nonzero) digits is 3200, while the sum is 26.

The square root of 145204451 is about 12050.0809540849. The cubic root of 145204451 is about 525.6055911250.

Adding to 145204451 its reverse (154402541), we get a palindrome (299606992).

The spelling of 145204451 in words is "one hundred forty-five million, two hundred four thousand, four hundred fifty-one".