61217061 has 16 divisors (see below), whose sum is σ = 82612608. Its totient is φ = 40320000.

The previous prime is 61217047. The next prime is 61217071. The reversal of 61217061 is 16071216.

It is not a de Polignac number, because 61217061 - 2⁷ = 61216933 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61217011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 152461 + ... + 152861.

It is an arithmetic number, because the mean of its divisors is an integer number (5163288).

Almost surely, 2^61217061 is an apocalyptic number.

It is an amenable number.

61217061 is a deficient number, since it is larger than the sum of its proper divisors (21395547).

61217061 is a wasteful number, since it uses less digits than its factorization.

61217061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 892.

The product of its (nonzero) digits is 504, while the sum is 24.

The square root of 61217061 is about 7824.1332427305. The cubic root of 61217061 is about 394.1160836200.

Adding to 61217061 its reverse (16071216), we get a palindrome (77288277).

The spelling of 61217061 in words is "sixty-one million, two hundred seventeen thousand, sixty-one".