55077061 has 8 divisors (see below), whose sum is σ = 61359480. Its totient is φ = 49086912.

The previous prime is 55077037. The next prime is 55077089. The reversal of 55077061 is 16077055.

It can be written as a sum of positive squares in 4 ways, for example, as 15952036 + 39125025 = 3994^2 + 6255^2 .

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 55077061 - 2⁷ = 55076933 is a prime.

It is a super-3 number, since 3×55077061³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55077661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72670 + ... + 73423.

It is an arithmetic number, because the mean of its divisors is an integer number (7669935).

Almost surely, 2^55077061 is an apocalyptic number.

It is an amenable number.

55077061 is a deficient number, since it is larger than the sum of its proper divisors (6282419).

55077061 is a wasteful number, since it uses less digits than its factorization.

55077061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146135.

The product of its (nonzero) digits is 7350, while the sum is 31.

The square root of 55077061 is about 7421.3921200810. The cubic root of 55077061 is about 380.4727748984.

The spelling of 55077061 in words is "fifty-five million, seventy-seven thousand, sixty-one".