55861077 has 8 divisors (see below), whose sum is σ = 75068416. Its totient is φ = 36947232.

The previous prime is 55861073. The next prime is 55861079. The reversal of 55861077 is 77016855.

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

It is not a de Polignac number, because 55861077 - 2² = 55861073 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 (55861073) 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, 72928 + ... + 73689.

It is an arithmetic number, because the mean of its divisors is an integer number (9383552).

Almost surely, 2^55861077 is an apocalyptic number.

It is an amenable number.

55861077 is a deficient number, since it is larger than the sum of its proper divisors (19207339).

55861077 is a wasteful number, since it uses less digits than its factorization.

55861077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146747.

The product of its (nonzero) digits is 58800, while the sum is 39.

The square root of 55861077 is about 7474.0268262831. The cubic root of 55861077 is about 382.2696053677.

The spelling of 55861077 in words is "fifty-five million, eight hundred sixty-one thousand, seventy-seven".