61066554 has 8 divisors (see below), whose sum is σ = 122133120. Its totient is φ = 20355516.

The previous prime is 61066531. The next prime is 61066561. The reversal of 61066554 is 45566016.

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

61066554 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5088874 + ... + 5088885.

It is an arithmetic number, because the mean of its divisors is an integer number (15266640).

Almost surely, 2^61066554 is an apocalyptic number.

61066554 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

61066554 is a wasteful number, since it uses less digits than its factorization.

61066554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10177764.

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 61066554 is about 7814.5091976400. The cubic root of 61066554 is about 393.7928300097.

The spelling of 61066554 in words is "sixty-one million, sixty-six thousand, five hundred fifty-four".