455121515 has 4 divisors (see below), whose sum is σ = 546145824. Its totient is φ = 364097208.

The previous prime is 455121481. The next prime is 455121517. The reversal of 455121515 is 515121554.

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

It is a cyclic number.

It is not a de Polignac number, because 455121515 - 2²⁰ = 454072939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (455121517) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45512147 + ... + 45512156.

It is an arithmetic number, because the mean of its divisors is an integer number (136536456).

Almost surely, 2^455121515 is an apocalyptic number.

455121515 is a deficient number, since it is larger than the sum of its proper divisors (91024309).

455121515 is an equidigital number, since it uses as much as digits as its factorization.

455121515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91024308.

The product of its digits is 5000, while the sum is 29.

The square root of 455121515 is about 21333.5771730856. The cubic root of 455121515 is about 769.2056321158.

The spelling of 455121515 in words is "four hundred fifty-five million, one hundred twenty-one thousand, five hundred fifteen".