61006081 has 8 divisors (see below), whose sum is σ = 66341160. Its totient is φ = 55865088.

The previous prime is 61006069. The next prime is 61006103. The reversal of 61006081 is 18060016.

It can be written as a sum of positive squares in 4 ways, for example, as 27133681 + 33872400 = 5209^2 + 5820^2 .

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 61006081 - 2¹³ = 60997889 is a prime.

It is a super-2 number, since 2×61006081² = 7443483837957122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61006181) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47866 + ... + 49123.

It is an arithmetic number, because the mean of its divisors is an integer number (8292645).

Almost surely, 2^61006081 is an apocalyptic number.

It is an amenable number.

61006081 is a deficient number, since it is larger than the sum of its proper divisors (5335079).

61006081 is a wasteful number, since it uses less digits than its factorization.

61006081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97043.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 61006081 is about 7810.6389623385. The cubic root of 61006081 is about 393.6627986621.

Adding to 61006081 its reverse (18060016), we get a palindrome (79066097).

The spelling of 61006081 in words is "sixty-one million, six thousand, eighty-one".