451978541 has 16 divisors (see below), whose sum is σ = 557259264. Its totient is φ = 357736704.

The previous prime is 451978493. The next prime is 451978603. The reversal of 451978541 is 145879154.

It is a cyclic number.

It is not a de Polignac number, because 451978541 - 2¹⁰ = 451977517 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 451978492 and 451978501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (451978841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29525 + ... + 42138.

It is an arithmetic number, because the mean of its divisors is an integer number (34828704).

Almost surely, 2^451978541 is an apocalyptic number.

It is an amenable number.

451978541 is a deficient number, since it is larger than the sum of its proper divisors (105280723).

451978541 is a wasteful number, since it uses less digits than its factorization.

451978541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71740.

The product of its digits is 201600, while the sum is 44.

The square root of 451978541 is about 21259.7869462514. The cubic root of 451978541 is about 767.4308827331.

The spelling of 451978541 in words is "four hundred fifty-one million, nine hundred seventy-eight thousand, five hundred forty-one".