450720515 has 16 divisors (see below), whose sum is σ = 620159232. Its totient is φ = 308051424.

The previous prime is 450720511. The next prime is 450720583. The reversal of 450720515 is 515027054.

It is a cyclic number.

It is not a de Polignac number, because 450720515 - 2² = 450720511 is a prime.

It is not an unprimeable number, because it can be changed into a prime (450720511) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10229 + ... + 31718.

It is an arithmetic number, because the mean of its divisors is an integer number (38759952).

Almost surely, 2^450720515 is an apocalyptic number.

450720515 is a deficient number, since it is larger than the sum of its proper divisors (169438717).

450720515 is a wasteful number, since it uses less digits than its factorization.

450720515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42266.

The product of its (nonzero) digits is 7000, while the sum is 29.

The square root of 450720515 is about 21230.1793445086. The cubic root of 450720515 is about 766.7182049999.

Adding to 450720515 its reverse (515027054), we get a palindrome (965747569).

The spelling of 450720515 in words is "four hundred fifty million, seven hundred twenty thousand, five hundred fifteen".