61081355 has 8 divisors (see below), whose sum is σ = 73507392. Its totient is φ = 48725248.

The previous prime is 61081351. The next prime is 61081367. The reversal of 61081355 is 55318016.

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

It is a cyclic number.

It is not a de Polignac number, because 61081355 - 2² = 61081351 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61081351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15539 + ... + 19068.

It is an arithmetic number, because the mean of its divisors is an integer number (9188424).

Almost surely, 2^61081355 is an apocalyptic number.

61081355 is a deficient number, since it is larger than the sum of its proper divisors (12426037).

61081355 is a wasteful number, since it uses less digits than its factorization.

61081355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34965.

The product of its (nonzero) digits is 3600, while the sum is 29.

The square root of 61081355 is about 7815.4561607113. The cubic root of 61081355 is about 393.8246426057.

The spelling of 61081355 in words is "sixty-one million, eighty-one thousand, three hundred fifty-five".