55740917 has 2 divisors, whose sum is σ = 55740918. Its totient is φ = 55740916.

The previous prime is 55740913. The next prime is 55740973. The reversal of 55740917 is 71904755.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52504516 + 3236401 = 7246^2 + 1799^2 .

It is a cyclic number.

It is not a de Polignac number, because 55740917 - 2² = 55740913 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55740913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27870458 + 27870459.

It is an arithmetic number, because the mean of its divisors is an integer number (27870459).

Almost surely, 2^55740917 is an apocalyptic number.

It is an amenable number.

55740917 is a deficient number, since it is larger than the sum of its proper divisors (1).

55740917 is an equidigital number, since it uses as much as digits as its factorization.

55740917 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 44100, while the sum is 38.

The square root of 55740917 is about 7465.9839940895. The cubic root of 55740917 is about 381.9953148553.

The spelling of 55740917 in words is "fifty-five million, seven hundred forty thousand, nine hundred seventeen".