61555426 has 8 divisors (see below), whose sum is σ = 93370860. Its totient is φ = 30431808.

The previous prime is 61555423. The next prime is 61555427. The reversal of 61555426 is 62455516.

61555426 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 60824401 + 731025 = 7799^2 + 855^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 61555391 and 61555400.

It is not an unprimeable number, because it can be changed into a prime (61555423) 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, 172731 + ... + 173086.

Almost surely, 2^61555426 is an apocalyptic number.

61555426 is a deficient number, since it is larger than the sum of its proper divisors (31815434).

61555426 is a wasteful number, since it uses less digits than its factorization.

61555426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345908.

The product of its digits is 36000, while the sum is 34.

The square root of 61555426 is about 7845.7266075234. The cubic root of 61555426 is about 394.8408823408.

The spelling of 61555426 in words is "sixty-one million, five hundred fifty-five thousand, four hundred twenty-six".