451354378 has 4 divisors (see below), whose sum is σ = 677031570. Its totient is φ = 225677188.

The previous prime is 451354361. The next prime is 451354429. The reversal of 451354378 is 873453154.

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

It can be written as a sum of positive squares in only one way, i.e., 450840289 + 514089 = 21233^2 + 717^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 451354378.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112838593 + ... + 112838596.

Almost surely, 2^451354378 is an apocalyptic number.

451354378 is a deficient number, since it is larger than the sum of its proper divisors (225677192).

451354378 is a wasteful number, since it uses less digits than its factorization.

451354378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225677191.

The product of its digits is 201600, while the sum is 40.

The square root of 451354378 is about 21245.1024473877. The cubic root of 451354378 is about 767.0774569384.

The spelling of 451354378 in words is "four hundred fifty-one million, three hundred fifty-four thousand, three hundred seventy-eight".