451023506 has 4 divisors (see below), whose sum is σ = 676535262. Its totient is φ = 225511752.

The previous prime is 451023497. The next prime is 451023533. The reversal of 451023506 is 605320154.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 605320154 = 2 ⋅302660077.

It can be written as a sum of positive squares in only one way, i.e., 251507881 + 199515625 = 15859^2 + 14125^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112755875 + ... + 112755878.

Almost surely, 2^451023506 is an apocalyptic number.

451023506 is a deficient number, since it is larger than the sum of its proper divisors (225511756).

451023506 is a wasteful number, since it uses less digits than its factorization.

451023506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225511755.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 451023506 is about 21237.3140015398. The cubic root of 451023506 is about 766.8899719611.

The spelling of 451023506 in words is "four hundred fifty-one million, twenty-three thousand, five hundred six".