55555150655479 has 2 divisors, whose sum is σ = 55555150655480. Its totient is φ = 55555150655478.

The previous prime is 55555150655447. The next prime is 55555150655593. The reversal of 55555150655479 is 97455605155555.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55555150655479 - 2⁵ = 55555150655447 is a prime.

It is a super-3 number, since 3×55555150655479³ (a number of 42 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55555150655779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27777575327739 + 27777575327740.

It is an arithmetic number, because the mean of its divisors is an integer number (27777575327740).

Almost surely, 2^{55555150655479} is an apocalyptic number.

55555150655479 is a deficient number, since it is larger than the sum of its proper divisors (1).

55555150655479 is an equidigital number, since it uses as much as digits as its factorization.

55555150655479 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 590625000, while the sum is 67.

The spelling of 55555150655479 in words is "fifty-five trillion, five hundred fifty-five billion, one hundred fifty million, six hundred fifty-five thousand, four hundred seventy-nine".