55986451 has 2 divisors, whose sum is σ = 55986452. Its totient is φ = 55986450.

The previous prime is 55986449. The next prime is 55986479. The reversal of 55986451 is 15468955.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55986451 - 2¹ = 55986449 is a prime.

Together with 55986449, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 55986398 and 55986407.

It is not a weakly prime, because it can be changed into another prime (55986481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27993225 + 27993226.

It is an arithmetic number, because the mean of its divisors is an integer number (27993226).

Almost surely, 2^55986451 is an apocalyptic number.

55986451 is a deficient number, since it is larger than the sum of its proper divisors (1).

55986451 is an equidigital number, since it uses as much as digits as its factorization.

55986451 is an evil number, because the sum of its binary digits is even.

The product of its digits is 216000, while the sum is 43.

The square root of 55986451 is about 7482.4094381422. The cubic root of 55986451 is about 382.5553789412. Note that the first 3 decimals are identical.

The spelling of 55986451 in words is "fifty-five million, nine hundred eighty-six thousand, four hundred fifty-one".