1452545405 has 4 divisors (see below), whose sum is σ = 1743054492. Its totient is φ = 1162036320.

The previous prime is 1452545363. The next prime is 1452545407. The reversal of 1452545405 is 5045452541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5045452541 = 14071 ⋅358571.

It can be written as a sum of positive squares in 2 ways, for example, as 499835449 + 952709956 = 22357^2 + 30866^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1452545405 is a prime.

It is a super-2 number, since 2×1452545405² = 4219776307173228050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1452545407) 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, 145254536 + ... + 145254545.

It is an arithmetic number, because the mean of its divisors is an integer number (435763623).

Almost surely, 2^1452545405 is an apocalyptic number.

It is an amenable number.

1452545405 is a deficient number, since it is larger than the sum of its proper divisors (290509087).

1452545405 is an equidigital number, since it uses as much as digits as its factorization.

1452545405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290509086.

The product of its (nonzero) digits is 80000, while the sum is 35.

The square root of 1452545405 is about 38112.2736792231. The cubic root of 1452545405 is about 1132.5131121711.

Adding to 1452545405 its reverse (5045452541), we get a palindrome (6497997946).

The spelling of 1452545405 in words is "one billion, four hundred fifty-two million, five hundred forty-five thousand, four hundred five".