61445313 has 12 divisors (see below), whose sum is σ = 88885888. Its totient is φ = 40902840.

The previous prime is 61445303. The next prime is 61445339. The reversal of 61445313 is 31354416.

61445313 is a `hidden beast` number, since 614 + 45 + 3 + 1 + 3 = 666.

It is not a de Polignac number, because 61445313 - 2¹⁰ = 61444289 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61445303) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1848 + ... + 11238.

Almost surely, 2^61445313 is an apocalyptic number.

It is an amenable number.

61445313 is a deficient number, since it is larger than the sum of its proper divisors (27440575).

61445313 is a wasteful number, since it uses less digits than its factorization.

61445313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10124 (or 10121 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 61445313 is about 7838.7060794496. The cubic root of 61445313 is about 394.6053056837.

Adding to 61445313 its reverse (31354416), we get a palindrome (92799729).

The spelling of 61445313 in words is "sixty-one million, four hundred forty-five thousand, three hundred thirteen".