55493429 has 2 divisors, whose sum is σ = 55493430. Its totient is φ = 55493428.

The previous prime is 55493419. The next prime is 55493447. The reversal of 55493429 is 92439455.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46553329 + 8940100 = 6823^2 + 2990^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55493429 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55493419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27746714 + 27746715.

It is an arithmetic number, because the mean of its divisors is an integer number (27746715).

Almost surely, 2^55493429 is an apocalyptic number.

It is an amenable number.

55493429 is a deficient number, since it is larger than the sum of its proper divisors (1).

55493429 is an equidigital number, since it uses as much as digits as its factorization.

55493429 is an evil number, because the sum of its binary digits is even.

The product of its digits is 194400, while the sum is 41.

The square root of 55493429 is about 7449.3911831773. The cubic root of 55493429 is about 381.4291268263.

The spelling of 55493429 in words is "fifty-five million, four hundred ninety-three thousand, four hundred twenty-nine".