55315451 has 2 divisors, whose sum is σ = 55315452. Its totient is φ = 55315450.

The previous prime is 55315427. The next prime is 55315459. The reversal of 55315451 is 15451355.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55315451 - 2¹⁴ = 55299067 is a prime.

It is not a weakly prime, because it can be changed into another prime (55315459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27657725 + 27657726.

It is an arithmetic number, because the mean of its divisors is an integer number (27657726).

Almost surely, 2^55315451 is an apocalyptic number.

55315451 is a deficient number, since it is larger than the sum of its proper divisors (1).

55315451 is an equidigital number, since it uses as much as digits as its factorization.

55315451 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7500, while the sum is 29.

The square root of 55315451 is about 7437.4357812354. The cubic root of 55315451 is about 381.0209181526.

The spelling of 55315451 in words is "fifty-five million, three hundred fifteen thousand, four hundred fifty-one".