55151399 has 2 divisors, whose sum is σ = 55151400. Its totient is φ = 55151398.

The previous prime is 55151389. The next prime is 55151419. The reversal of 55151399 is 99315155.

55151399 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55151399 - 2⁸ = 55151143 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55151329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27575699 + 27575700.

It is an arithmetic number, because the mean of its divisors is an integer number (27575700).

Almost surely, 2^55151399 is an apocalyptic number.

55151399 is a deficient number, since it is larger than the sum of its proper divisors (1).

55151399 is an equidigital number, since it uses as much as digits as its factorization.

55151399 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30375, while the sum is 38.

The square root of 55151399 is about 7426.3987908003. The cubic root of 55151399 is about 380.6438737750.

The spelling of 55151399 in words is "fifty-five million, one hundred fifty-one thousand, three hundred ninety-nine".