55005451 has 2 divisors, whose sum is σ = 55005452. Its totient is φ = 55005450.

The previous prime is 55005449. The next prime is 55005473. The reversal of 55005451 is 15450055.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55005451 - 2¹ = 55005449 is a prime.

Together with 55005449, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (55005481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27502725 + 27502726.

It is an arithmetic number, because the mean of its divisors is an integer number (27502726).

Almost surely, 2^55005451 is an apocalyptic number.

55005451 is a deficient number, since it is larger than the sum of its proper divisors (1).

55005451 is an equidigital number, since it uses as much as digits as its factorization.

55005451 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2500, while the sum is 25.

The square root of 55005451 is about 7416.5659843353. The cubic root of 55005451 is about 380.3078092331.

The spelling of 55005451 in words is "fifty-five million, five thousand, four hundred fifty-one".