454521145 has 16 divisors (see below), whose sum is σ = 593444880. Its totient is φ = 332181504.

The previous prime is 454521113. The next prime is 454521149. The reversal of 454521145 is 541125454.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 10323369 + 444197776 = 3213^2 + 21076^2 .

It is a cyclic number.

It is not a de Polignac number, because 454521145 - 2⁵ = 454521113 is a prime.

It is a super-2 number, since 2×454521145² = 413178942504222050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (454521149) 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, 29740 + ... + 42349.

It is an arithmetic number, because the mean of its divisors is an integer number (37090305).

Almost surely, 2^454521145 is an apocalyptic number.

It is an amenable number.

454521145 is a deficient number, since it is larger than the sum of its proper divisors (138923735).

454521145 is a wasteful number, since it uses less digits than its factorization.

454521145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72204.

The product of its digits is 16000, while the sum is 31.

The square root of 454521145 is about 21319.5015185628. The cubic root of 454521145 is about 768.8672527434.

Adding to 454521145 its reverse (541125454), we get a palindrome (995646599).

The spelling of 454521145 in words is "four hundred fifty-four million, five hundred twenty-one thousand, one hundred forty-five".