61228427 has 4 divisors (see below), whose sum is σ = 65938320. Its totient is φ = 56518536.

The previous prime is 61228423. The next prime is 61228429. The reversal of 61228427 is 72482216.

61228427 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.

It is a cyclic number.

It is not a de Polignac number, because 61228427 - 2² = 61228423 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61228393 and 61228402.

It is not an unprimeable number, because it can be changed into a prime (61228423) 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, 2354927 + ... + 2354952.

It is an arithmetic number, because the mean of its divisors is an integer number (16484580).

Almost surely, 2^61228427 is an apocalyptic number.

61228427 is a deficient number, since it is larger than the sum of its proper divisors (4709893).

61228427 is a wasteful number, since it uses less digits than its factorization.

61228427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4709892.

The product of its digits is 10752, while the sum is 32.

The square root of 61228427 is about 7824.8595514552. The cubic root of 61228427 is about 394.1404735865.

The spelling of 61228427 in words is "sixty-one million, two hundred twenty-eight thousand, four hundred twenty-seven".