61448911 has 4 divisors (see below), whose sum is σ = 61464832. Its totient is φ = 61432992.

The previous prime is 61448879. The next prime is 61448927. The reversal of 61448911 is 11984416.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 61448911 - 2⁵ = 61448879 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 (61448951) 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, 1906 + ... + 11248.

It is an arithmetic number, because the mean of its divisors is an integer number (15366208).

Almost surely, 2^61448911 is an apocalyptic number.

61448911 is a deficient number, since it is larger than the sum of its proper divisors (15921).

61448911 is an equidigital number, since it uses as much as digits as its factorization.

61448911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15920.

The product of its digits is 6912, while the sum is 34.

The square root of 61448911 is about 7838.9355782530. The cubic root of 61448911 is about 394.6130077205.

The spelling of 61448911 in words is "sixty-one million, four hundred forty-eight thousand, nine hundred eleven".