61155061 has 8 divisors (see below), whose sum is σ = 66895200. Its totient is φ = 55445040.

The previous prime is 61155049. The next prime is 61155089. The reversal of 61155061 is 16055116.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61155061 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 (61155011) 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, 3166 + ... + 11503.

It is an arithmetic number, because the mean of its divisors is an integer number (8361900).

Almost surely, 2^61155061 is an apocalyptic number.

It is an amenable number.

61155061 is a deficient number, since it is larger than the sum of its proper divisors (5740139).

61155061 is a wasteful number, since it uses less digits than its factorization.

61155061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15059.

The product of its (nonzero) digits is 900, while the sum is 25.

The square root of 61155061 is about 7820.1701388141. The cubic root of 61155061 is about 393.9829864590.

The spelling of 61155061 in words is "sixty-one million, one hundred fifty-five thousand, sixty-one".