450378511 has 4 divisors (see below), whose sum is σ = 491322024. Its totient is φ = 409435000.

The previous prime is 450378463. The next prime is 450378529. The reversal of 450378511 is 115873054.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 450378511 - 2⁹ = 450377999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (450378011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20471740 + ... + 20471761.

It is an arithmetic number, because the mean of its divisors is an integer number (122830506).

Almost surely, 2^450378511 is an apocalyptic number.

450378511 is a deficient number, since it is larger than the sum of its proper divisors (40943513).

450378511 is a wasteful number, since it uses less digits than its factorization.

450378511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40943512.

The product of its (nonzero) digits is 16800, while the sum is 34.

The square root of 450378511 is about 21222.1231501469. The cubic root of 450378511 is about 766.5242288839.

The spelling of 450378511 in words is "four hundred fifty million, three hundred seventy-eight thousand, five hundred eleven".