55078651 has 2 divisors, whose sum is σ = 55078652. Its totient is φ = 55078650.

The previous prime is 55078643. The next prime is 55078679. The reversal of 55078651 is 15687055.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55078651 - 2³ = 55078643 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55078651.

It is not a weakly prime, because it can be changed into another prime (55078601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27539325 + 27539326.

It is an arithmetic number, because the mean of its divisors is an integer number (27539326).

Almost surely, 2^55078651 is an apocalyptic number.

55078651 is a deficient number, since it is larger than the sum of its proper divisors (1).

55078651 is an equidigital number, since it uses as much as digits as its factorization.

55078651 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 42000, while the sum is 37.

The square root of 55078651 is about 7421.4992420669. The cubic root of 55078651 is about 380.4764361073.

The spelling of 55078651 in words is "fifty-five million, seventy-eight thousand, six hundred fifty-one".