55845451 has 2 divisors, whose sum is σ = 55845452. Its totient is φ = 55845450.

The previous prime is 55845437. The next prime is 55845487. The reversal of 55845451 is 15454855.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55845451 - 2¹³ = 55837259 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55845451.

It is not a weakly prime, because it can be changed into another prime (55845421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27922725 + 27922726.

It is an arithmetic number, because the mean of its divisors is an integer number (27922726).

Almost surely, 2^55845451 is an apocalyptic number.

55845451 is a deficient number, since it is larger than the sum of its proper divisors (1).

55845451 is an equidigital number, since it uses as much as digits as its factorization.

55845451 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 80000, while the sum is 37.

The square root of 55845451 is about 7472.9813996825. The cubic root of 55845451 is about 382.2339579949.

The spelling of 55845451 in words is "fifty-five million, eight hundred forty-five thousand, four hundred fifty-one".