1204452545 has 4 divisors (see below), whose sum is σ = 1445343060. Its totient is φ = 963562032.

The previous prime is 1204452493. The next prime is 1204452551. The reversal of 1204452545 is 5452544021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5452544021 = 8273 ⋅659077.

It can be written as a sum of positive squares in 2 ways, for example, as 309724801 + 894727744 = 17599^2 + 29912^2 .

It is a cyclic number.

It is not a de Polignac number, because 1204452545 - 2¹⁸ = 1204190401 is a prime.

It is a super-3 number, since 3×1204452545³ (a number of 28 digits) contains 333 as substring.

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, 120445250 + ... + 120445259.

It is an arithmetic number, because the mean of its divisors is an integer number (361335765).

Almost surely, 2^1204452545 is an apocalyptic number.

It is an amenable number.

1204452545 is a deficient number, since it is larger than the sum of its proper divisors (240890515).

1204452545 is an equidigital number, since it uses as much as digits as its factorization.

1204452545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240890514.

The product of its (nonzero) digits is 32000, while the sum is 32.

The square root of 1204452545 is about 34705.2235981848. The cubic root of 1204452545 is about 1063.9712622616.

Adding to 1204452545 its reverse (5452544021), we get a palindrome (6656996566).

The spelling of 1204452545 in words is "one billion, two hundred four million, four hundred fifty-two thousand, five hundred forty-five".