55813573 has 2 divisors, whose sum is σ = 55813574. Its totient is φ = 55813572.

The previous prime is 55813529. The next prime is 55813577. The reversal of 55813573 is 37531855.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28376929 + 27436644 = 5327^2 + 5238^2 .

It is a cyclic number.

It is not a de Polignac number, because 55813573 - 2⁹ = 55813061 is a prime.

It is equal to p_3327886 and since 55813573 and 3327886 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55813577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27906786 + 27906787.

It is an arithmetic number, because the mean of its divisors is an integer number (27906787).

Almost surely, 2^55813573 is an apocalyptic number.

It is an amenable number.

55813573 is a deficient number, since it is larger than the sum of its proper divisors (1).

55813573 is an equidigital number, since it uses as much as digits as its factorization.

55813573 is an evil number, because the sum of its binary digits is even.

The product of its digits is 63000, while the sum is 37.

The square root of 55813573 is about 7470.8482115487. The cubic root of 55813573 is about 382.1612145389.

The spelling of 55813573 in words is "fifty-five million, eight hundred thirteen thousand, five hundred seventy-three".