451000247 has 4 divisors (see below), whose sum is σ = 451230120. Its totient is φ = 450770376.

The previous prime is 451000237. The next prime is 451000271. The reversal of 451000247 is 742000154.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-451000247 is a prime.

It is a super-2 number, since 2×451000247² = 406802445588122018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (451000237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111968 + ... + 115925.

It is an arithmetic number, because the mean of its divisors is an integer number (112807530).

Almost surely, 2^451000247 is an apocalyptic number.

451000247 is a deficient number, since it is larger than the sum of its proper divisors (229873).

451000247 is a wasteful number, since it uses less digits than its factorization.

451000247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229872.

The product of its (nonzero) digits is 1120, while the sum is 23.

The square root of 451000247 is about 21236.7663969824. The cubic root of 451000247 is about 766.8767890558.

The spelling of 451000247 in words is "four hundred fifty-one million, two hundred forty-seven", and thus it is an aban number.