61755061 has 8 divisors (see below), whose sum is σ = 63365400. Its totient is φ = 60149760.

The previous prime is 61755049. The next prime is 61755077. The reversal of 61755061 is 16055716.

It can be written as a sum of positive squares in 4 ways, for example, as 3538161 + 58216900 = 1881^2 + 7630^2 .

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 61755061 - 2⁷ = 61754933 is a prime.

It is a super-2 number, since 2×61755061² = 7627375118227442, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61755041) 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, 43125 + ... + 44533.

It is an arithmetic number, because the mean of its divisors is an integer number (7920675).

Almost surely, 2^61755061 is an apocalyptic number.

It is an amenable number.

61755061 is a deficient number, since it is larger than the sum of its proper divisors (1610339).

61755061 is a wasteful number, since it uses less digits than its factorization.

61755061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2519.

The product of its (nonzero) digits is 6300, while the sum is 31.

The square root of 61755061 is about 7858.4388398714. The cubic root of 61755061 is about 395.2672677113.

It can be divided in two parts, 6175 and 5061, that added together give a square (11236 = 106²).

The spelling of 61755061 in words is "sixty-one million, seven hundred fifty-five thousand, sixty-one".