1455213545 has 4 divisors (see below), whose sum is σ = 1746256260. Its totient is φ = 1164170832.

The previous prime is 1455213511. The next prime is 1455213581. The reversal of 1455213545 is 5453125541.

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 253828624 + 1201384921 = 15932^2 + 34661^2 .

It is a cyclic number.

It is not a de Polignac number, because 1455213545 - 2¹⁸ = 1454951401 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 145521350 + ... + 145521359.

It is an arithmetic number, because the mean of its divisors is an integer number (436564065).

Almost surely, 2^1455213545 is an apocalyptic number.

It is an amenable number.

1455213545 is a deficient number, since it is larger than the sum of its proper divisors (291042715).

1455213545 is an equidigital number, since it uses as much as digits as its factorization.

1455213545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291042714.

The product of its digits is 60000, while the sum is 35.

The square root of 1455213545 is about 38147.2613040569. The cubic root of 1455213545 is about 1133.2061152376.

The spelling of 1455213545 in words is "one billion, four hundred fifty-five million, two hundred thirteen thousand, five hundred forty-five".