55743553 has 2 divisors, whose sum is σ = 55743554. Its totient is φ = 55743552.

The previous prime is 55743529. The next prime is 55743563. The reversal of 55743553 is 35534755.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51151104 + 4592449 = 7152^2 + 2143^2 .

It is a cyclic number.

It is not a de Polignac number, because 55743553 - 2⁵ = 55743521 is a prime.

It is not a weakly prime, because it can be changed into another prime (55743563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27871776 + 27871777.

It is an arithmetic number, because the mean of its divisors is an integer number (27871777).

Almost surely, 2^55743553 is an apocalyptic number.

It is an amenable number.

55743553 is a deficient number, since it is larger than the sum of its proper divisors (1).

55743553 is an equidigital number, since it uses as much as digits as its factorization.

55743553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 157500, while the sum is 37.

The square root of 55743553 is about 7466.1605260000. The cubic root of 55743553 is about 382.0013363074.

The spelling of 55743553 in words is "fifty-five million, seven hundred forty-three thousand, five hundred fifty-three".