451034021 has 8 divisors (see below), whose sum is σ = 478381464. Its totient is φ = 423777280.

The previous prime is 451033991. The next prime is 451034053. The reversal of 451034021 is 120430154.

It can be written as a sum of positive squares in 4 ways, for example, as 24611521 + 426422500 = 4961^2 + 20650^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-451034021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 451033984 and 451034002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (451037021) 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, 12290 + ... + 32451.

It is an arithmetic number, because the mean of its divisors is an integer number (59797683).

Almost surely, 2^451034021 is an apocalyptic number.

It is an amenable number.

451034021 is a deficient number, since it is larger than the sum of its proper divisors (27347443).

451034021 is a wasteful number, since it uses less digits than its factorization.

451034021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45351.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 451034021 is about 21237.5615596518. The cubic root of 451034021 is about 766.8959315805.

Adding to 451034021 its reverse (120430154), we get a palindrome (571464175).

The spelling of 451034021 in words is "four hundred fifty-one million, thirty-four thousand, twenty-one".