451040078 has 4 divisors (see below), whose sum is σ = 676560120. Its totient is φ = 225520038.

The previous prime is 451040077. The next prime is 451040087. The reversal of 451040078 is 870040154.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 870040154 = 2 ⋅435020077.

It is a self number, because there is not a number n which added to its sum of digits gives 451040078.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (451040077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112760018 + ... + 112760021.

It is an arithmetic number, because the mean of its divisors is an integer number (169140030).

Almost surely, 2^451040078 is an apocalyptic number.

451040078 is a deficient number, since it is larger than the sum of its proper divisors (225520042).

451040078 is a wasteful number, since it uses less digits than its factorization.

451040078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225520041.

The product of its (nonzero) digits is 4480, while the sum is 29.

The square root of 451040078 is about 21237.7041602900. The cubic root of 451040078 is about 766.8993644833.

The spelling of 451040078 in words is "four hundred fifty-one million, forty thousand, seventy-eight".