451520039 has 2 divisors, whose sum is σ = 451520040. Its totient is φ = 451520038.

The previous prime is 451520029. The next prime is 451520057. The reversal of 451520039 is 930025154.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-451520039 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 451519993 and 451520020.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (451520029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225760019 + 225760020.

It is an arithmetic number, because the mean of its divisors is an integer number (225760020).

Almost surely, 2^451520039 is an apocalyptic number.

451520039 is a deficient number, since it is larger than the sum of its proper divisors (1).

451520039 is an equidigital number, since it uses as much as digits as its factorization.

451520039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 451520039 is about 21249.0008941597. Note that the first 3 decimals coincide. The cubic root of 451520039 is about 767.1712925003.

The spelling of 451520039 in words is "four hundred fifty-one million, five hundred twenty thousand, thirty-nine".