55407773 has 2 divisors, whose sum is σ = 55407774. Its totient is φ = 55407772.

The previous prime is 55407767. The next prime is 55407787. The reversal of 55407773 is 37770455.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44662489 + 10745284 = 6683^2 + 3278^2 .

It is a cyclic number.

It is not a de Polignac number, because 55407773 - 2²⁰ = 54359197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55407733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27703886 + 27703887.

It is an arithmetic number, because the mean of its divisors is an integer number (27703887).

Almost surely, 2^55407773 is an apocalyptic number.

It is an amenable number.

55407773 is a deficient number, since it is larger than the sum of its proper divisors (1).

55407773 is an equidigital number, since it uses as much as digits as its factorization.

55407773 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 102900, while the sum is 38.

The square root of 55407773 is about 7443.6397682854. The cubic root of 55407773 is about 381.2327761457.

The spelling of 55407773 in words is "fifty-five million, four hundred seven thousand, seven hundred seventy-three".