451340145 has 24 divisors (see below), whose sum is σ = 783993600. Its totient is φ = 240200736.

The previous prime is 451340143. The next prime is 451340161. The reversal of 451340145 is 541043154.

It is a happy number.

451340145 is a `hidden beast` number, since 4 + 513 + 4 + 0 + 145 = 666.

It is not a de Polignac number, because 451340145 - 2¹ = 451340143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (451340143) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11086 + ... + 32024.

It is an arithmetic number, because the mean of its divisors is an integer number (32666400).

Almost surely, 2^451340145 is an apocalyptic number.

451340145 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

451340145 is a deficient number, since it is larger than the sum of its proper divisors (332653455).

451340145 is a wasteful number, since it uses less digits than its factorization.

451340145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21429 (or 21426 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 451340145 is about 21244.7674734274. The cubic root of 451340145 is about 767.0693938519.

Adding to 451340145 its reverse (541043154), we get a palindrome (992383299).

The spelling of 451340145 in words is "four hundred fifty-one million, three hundred forty thousand, one hundred forty-five".