55378541 has 2 divisors, whose sum is σ = 55378542. Its totient is φ = 55378540.

The previous prime is 55378523. The next prime is 55378553. The reversal of 55378541 is 14587355.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36421225 + 18957316 = 6035^2 + 4354^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55378541 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 55378495 and 55378504.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55378591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27689270 + 27689271.

It is an arithmetic number, because the mean of its divisors is an integer number (27689271).

Almost surely, 2^55378541 is an apocalyptic number.

It is an amenable number.

55378541 is a deficient number, since it is larger than the sum of its proper divisors (1).

55378541 is an equidigital number, since it uses as much as digits as its factorization.

55378541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 84000, while the sum is 38.

The square root of 55378541 is about 7441.6759537083. The cubic root of 55378541 is about 381.1657208313.

The spelling of 55378541 in words is "fifty-five million, three hundred seventy-eight thousand, five hundred forty-one".