613121452 has 12 divisors (see below), whose sum is σ = 1087661176. Its totient is φ = 302361120.

The previous prime is 613121447. The next prime is 613121461. The reversal of 613121452 is 254121316.

It is a happy number.

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, 1049574 + ... + 1050157.

Almost surely, 2^613121452 is an apocalyptic number.

It is an amenable number.

613121452 is a deficient number, since it is larger than the sum of its proper divisors (474539724).

613121452 is a wasteful number, since it uses less digits than its factorization.

613121452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2099808 (or 2099806 counting only the distinct ones).

The product of its digits is 1440, while the sum is 25.

The square root of 613121452 is about 24761.2893848442. The cubic root of 613121452 is about 849.5367496504.

Adding to 613121452 its reverse (254121316), we get a palindrome (867242768).

The spelling of 613121452 in words is "six hundred thirteen million, one hundred twenty-one thousand, four hundred fifty-two".