61286454 has 48 divisors (see below), whose sum is σ = 138715200. Its totient is φ = 19531008.

The previous prime is 61286447. The next prime is 61286471. The reversal of 61286454 is 45468216.

61286454 is a `hidden beast` number, since 6 + 1 + 2 + 8 + 645 + 4 = 666.

61286454 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 58467 + ... + 59505.

It is an arithmetic number, because the mean of its divisors is an integer number (2889900).

Almost surely, 2^61286454 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61286454, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69357600).

61286454 is an abundant number, since it is smaller than the sum of its proper divisors (77428746).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61286454 is a wasteful number, since it uses less digits than its factorization.

61286454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1189 (or 1186 counting only the distinct ones).

The product of its digits is 46080, while the sum is 36.

The square root of 61286454 is about 7828.5665354521. The cubic root of 61286454 is about 394.2649450082.

The spelling of 61286454 in words is "sixty-one million, two hundred eighty-six thousand, four hundred fifty-four".