450778131 has 12 divisors (see below), whose sum is σ = 656887608. Its totient is φ = 297858624.

The previous prime is 450778129. The next prime is 450778151. The reversal of 450778131 is 131877054.

450778131 is a `hidden beast` number, since 450 + 7 + 78 + 131 = 666.

It is not a de Polignac number, because 450778131 - 2¹ = 450778129 is a prime.

It is a super-2 number, since 2×450778131² = 406401846775706322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (450778151) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 220605 + ... + 222638.

It is an arithmetic number, because the mean of its divisors is an integer number (54740634).

Almost surely, 2^450778131 is an apocalyptic number.

450778131 is a deficient number, since it is larger than the sum of its proper divisors (206109477).

450778131 is a wasteful number, since it uses less digits than its factorization.

450778131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 443362 (or 443359 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 36.

The square root of 450778131 is about 21231.5362373993. The cubic root of 450778131 is about 766.7508736955.

The spelling of 450778131 in words is "four hundred fifty million, seven hundred seventy-eight thousand, one hundred thirty-one".