61555498 has 24 divisors (see below), whose sum is σ = 97967268. Its totient is φ = 28999872.

The previous prime is 61555493. The next prime is 61555499. The reversal of 61555498 is 89455516.

61555498 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 61512649 + 42849 = 7843^2 + 207^2 .

It is not an unprimeable number, because it can be changed into a prime (61555493) 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 11 ways as a sum of consecutive naturals, for example, 76836 + ... + 77632.

Almost surely, 2^61555498 is an apocalyptic number.

61555498 is a deficient number, since it is larger than the sum of its proper divisors (36411770).

61555498 is a wasteful number, since it uses less digits than its factorization.

61555498 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 918 (or 895 counting only the distinct ones).

The product of its digits is 216000, while the sum is 43.

The square root of 61555498 is about 7845.7311960072. The cubic root of 61555498 is about 394.8410362863.

The spelling of 61555498 in words is "sixty-one million, five hundred fifty-five thousand, four hundred ninety-eight".