1455442213 has 4 divisors (see below), whose sum is σ = 1456459308. Its totient is φ = 1454425120.

The previous prime is 1455442211. The next prime is 1455442217. The reversal of 1455442213 is 3122445541.

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 624100324 + 831341889 = 24982^2 + 28833^2 .

It is a cyclic number.

It is not a de Polignac number, because 1455442213 - 2¹ = 1455442211 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1455442211) 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, 506398 + ... + 509263.

It is an arithmetic number, because the mean of its divisors is an integer number (364114827).

Almost surely, 2^1455442213 is an apocalyptic number.

It is an amenable number.

1455442213 is a deficient number, since it is larger than the sum of its proper divisors (1017095).

1455442213 is a wasteful number, since it uses less digits than its factorization.

1455442213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1017094.

The product of its digits is 19200, while the sum is 31.

The square root of 1455442213 is about 38150.2583608552. The cubic root of 1455442213 is about 1133.2654683603.

Adding to 1455442213 its reverse (3122445541), we get a palindrome (4577887754).

The spelling of 1455442213 in words is "one billion, four hundred fifty-five million, four hundred forty-two thousand, two hundred thirteen".