55737823 has 2 divisors, whose sum is σ = 55737824. Its totient is φ = 55737822.

The previous prime is 55737779. The next prime is 55737827. The reversal of 55737823 is 32873755.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55737823 - 2¹⁷ = 55606751 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55737827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27868911 + 27868912.

It is an arithmetic number, because the mean of its divisors is an integer number (27868912).

Almost surely, 2^55737823 is an apocalyptic number.

55737823 is a deficient number, since it is larger than the sum of its proper divisors (1).

55737823 is an equidigital number, since it uses as much as digits as its factorization.

55737823 is an evil number, because the sum of its binary digits is even.

The product of its digits is 176400, while the sum is 40.

The square root of 55737823 is about 7465.7767847693. The cubic root of 55737823 is about 381.9882469452.

The spelling of 55737823 in words is "fifty-five million, seven hundred thirty-seven thousand, eight hundred twenty-three".