55061615 has 16 divisors (see below), whose sum is σ = 75636288. Its totient is φ = 37694976.

The previous prime is 55061603. The next prime is 55061621. The reversal of 55061615 is 51616055.

55061615 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 55061615 - 2⁶ = 55061551 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34679 + ... + 36231.

It is an arithmetic number, because the mean of its divisors is an integer number (4727268).

Almost surely, 2^55061615 is an apocalyptic number.

55061615 is a deficient number, since it is larger than the sum of its proper divisors (20574673).

55061615 is a wasteful number, since it uses less digits than its factorization.

55061615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2578.

The product of its (nonzero) digits is 4500, while the sum is 29.

The square root of 55061615 is about 7420.3514067731. The cubic root of 55061615 is about 380.4372045428.

The spelling of 55061615 in words is "fifty-five million, sixty-one thousand, six hundred fifteen".