55516051 has 2 divisors, whose sum is σ = 55516052. Its totient is φ = 55516050.

The previous prime is 55516049. The next prime is 55516079. The reversal of 55516051 is 15061555.

It is an a-pointer prime, because the next prime (55516079) can be obtained adding 55516051 to its sum of digits (28).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55516051 - 2¹ = 55516049 is a prime.

Together with 55516049, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (55516001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27758025 + 27758026.

It is an arithmetic number, because the mean of its divisors is an integer number (27758026).

Almost surely, 2^55516051 is an apocalyptic number.

55516051 is a deficient number, since it is larger than the sum of its proper divisors (1).

55516051 is an equidigital number, since it uses as much as digits as its factorization.

55516051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3750, while the sum is 28.

The square root of 55516051 is about 7450.9094075824. The cubic root of 55516051 is about 381.4809498838.

The spelling of 55516051 in words is "fifty-five million, five hundred sixteen thousand, fifty-one".