61078577 has 4 divisors (see below), whose sum is σ = 69804096. Its totient is φ = 52353060.

The previous prime is 61078543. The next prime is 61078579. The reversal of 61078577 is 77587016.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 61078577 - 2⁶ = 61078513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61078579) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4362749 + ... + 4362762.

It is an arithmetic number, because the mean of its divisors is an integer number (17451024).

Almost surely, 2^61078577 is an apocalyptic number.

It is an amenable number.

61078577 is a deficient number, since it is larger than the sum of its proper divisors (8725519).

61078577 is an equidigital number, since it uses as much as digits as its factorization.

61078577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8725518.

The product of its (nonzero) digits is 82320, while the sum is 41.

The square root of 61078577 is about 7815.2784339395. The cubic root of 61078577 is about 393.8186720907.

The spelling of 61078577 in words is "sixty-one million, seventy-eight thousand, five hundred seventy-seven".