451145121 has 16 divisors (see below), whose sum is σ = 703448064. Its totient is φ = 251801424.

The previous prime is 451145119. The next prime is 451145129. The reversal of 451145121 is 121541154.

It is not a de Polignac number, because 451145121 - 2¹ = 451145119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 451145091 and 451145100.

It is not an unprimeable number, because it can be changed into a prime (451145129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 248901 + ... + 250706.

It is an arithmetic number, because the mean of its divisors is an integer number (43965504).

Almost surely, 2^451145121 is an apocalyptic number.

It is an amenable number.

451145121 is a deficient number, since it is larger than the sum of its proper divisors (252302943).

451145121 is a wasteful number, since it uses less digits than its factorization.

451145121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499660.

The product of its digits is 800, while the sum is 24.

The square root of 451145121 is about 21240.1770472847. The cubic root of 451145121 is about 766.9588944165.

Adding to 451145121 its reverse (121541154), we get a palindrome (572686275).

It can be divided in two parts, 451145 and 121, that multiplied together give a palindrome (54588545).

The spelling of 451145121 in words is "four hundred fifty-one million, one hundred forty-five thousand, one hundred twenty-one".