61444265 has 8 divisors (see below), whose sum is σ = 74562120. Its totient is φ = 48602752.

The previous prime is 61444261. The next prime is 61444277. The reversal of 61444265 is 56244416.

It can be written as a sum of positive squares in 4 ways, for example, as 2262016 + 59182249 = 1504^2 + 7693^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61444265 - 2² = 61444261 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (61444261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68594 + ... + 69483.

It is an arithmetic number, because the mean of its divisors is an integer number (9320265).

Almost surely, 2^61444265 is an apocalyptic number.

It is an amenable number.

61444265 is a deficient number, since it is larger than the sum of its proper divisors (13117855).

61444265 is a wasteful number, since it uses less digits than its factorization.

61444265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138171.

The product of its digits is 23040, while the sum is 32.

The square root of 61444265 is about 7838.6392313972. The cubic root of 61444265 is about 394.6030622324.

The spelling of 61444265 in words is "sixty-one million, four hundred forty-four thousand, two hundred sixty-five".