457521145 has 4 divisors (see below), whose sum is σ = 549025380. Its totient is φ = 366016912.

The previous prime is 457521131. The next prime is 457521151. The reversal of 457521145 is 541125754.

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

It can be written as a sum of positive squares in 2 ways, for example, as 82246761 + 375274384 = 9069^2 + 19372^2 .

It is a cyclic number.

It is not a de Polignac number, because 457521145 - 2¹³ = 457512953 is a prime.

It is a super-2 number, since 2×457521145² = 418651196244222050, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 457521145.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45752110 + ... + 45752119.

It is an arithmetic number, because the mean of its divisors is an integer number (137256345).

Almost surely, 2^457521145 is an apocalyptic number.

It is an amenable number.

457521145 is a deficient number, since it is larger than the sum of its proper divisors (91504235).

457521145 is an equidigital number, since it uses as much as digits as its factorization.

457521145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91504234.

The product of its digits is 28000, while the sum is 34.

The square root of 457521145 is about 21389.7439208608. The cubic root of 457521145 is about 770.5551430395. Note that the first 3 decimals are identical.

Adding to 457521145 its reverse (541125754), we get a palindrome (998646899).

The spelling of 457521145 in words is "four hundred fifty-seven million, five hundred twenty-one thousand, one hundred forty-five".