61655061 has 16 divisors (see below), whose sum is σ = 90925184. Its totient is φ = 36915264.

The previous prime is 61655047. The next prime is 61655081. The reversal of 61655061 is 16055616.

It is not a de Polignac number, because 61655061 - 2⁷ = 61654933 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61655081) 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, 19921 + ... + 22806.

It is an arithmetic number, because the mean of its divisors is an integer number (5682824).

Almost surely, 2^61655061 is an apocalyptic number.

It is an amenable number.

61655061 is a deficient number, since it is larger than the sum of its proper divisors (29270123).

61655061 is a wasteful number, since it uses less digits than its factorization.

61655061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42780.

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 61655061 is about 7852.0736751510. The cubic root of 61655061 is about 395.0538002882.

The spelling of 61655061 in words is "sixty-one million, six hundred fifty-five thousand, sixty-one".