55419929 has 2 divisors, whose sum is σ = 55419930. Its totient is φ = 55419928.

The previous prime is 55419919. The next prime is 55420039. The reversal of 55419929 is 92991455.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36929929 + 18490000 = 6077^2 + 4300^2 .

It is a cyclic number.

It is not a de Polignac number, because 55419929 - 2¹⁶ = 55354393 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55419929.

It is not a weakly prime, because it can be changed into another prime (55419919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27709964 + 27709965.

It is an arithmetic number, because the mean of its divisors is an integer number (27709965).

Almost surely, 2^55419929 is an apocalyptic number.

It is an amenable number.

55419929 is a deficient number, since it is larger than the sum of its proper divisors (1).

55419929 is an equidigital number, since it uses as much as digits as its factorization.

55419929 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145800, while the sum is 44.

The square root of 55419929 is about 7444.4562595263. The cubic root of 55419929 is about 381.2606538633.

The spelling of 55419929 in words is "fifty-five million, four hundred nineteen thousand, nine hundred twenty-nine".