61123249 has 4 divisors (see below), whose sum is σ = 66679920. Its totient is φ = 55566580.

The previous prime is 61123241. The next prime is 61123267. The reversal of 61123249 is 94232116.

61123249 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 61123249 - 2³ = 61123241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61123241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2778319 + ... + 2778340.

It is an arithmetic number, because the mean of its divisors is an integer number (16669980).

Almost surely, 2^61123249 is an apocalyptic number.

It is an amenable number.

61123249 is a deficient number, since it is larger than the sum of its proper divisors (5556671).

61123249 is a wasteful number, since it uses less digits than its factorization.

61123249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5556670.

The product of its digits is 2592, while the sum is 28.

The square root of 61123249 is about 7818.1359031421. The cubic root of 61123249 is about 393.9146598130.

The spelling of 61123249 in words is "sixty-one million, one hundred twenty-three thousand, two hundred forty-nine".