55816078 has 16 divisors (see below), whose sum is σ = 87552000. Its totient is φ = 26637336.

The previous prime is 55816073. The next prime is 55816081. The reversal of 55816078 is 87061855.

It is a self number, because there is not a number n which added to its sum of digits gives 55816078.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55816073) 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, 26923 + ... + 28921.

It is an arithmetic number, because the mean of its divisors is an integer number (5472000).

Almost surely, 2^55816078 is an apocalyptic number.

55816078 is a deficient number, since it is larger than the sum of its proper divisors (31735922).

55816078 is a wasteful number, since it uses less digits than its factorization.

55816078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2631.

The product of its (nonzero) digits is 67200, while the sum is 40.

The square root of 55816078 is about 7471.0158613136. The cubic root of 55816078 is about 382.1669317833.

The spelling of 55816078 in words is "fifty-five million, eight hundred sixteen thousand, seventy-eight".