54123557 has 2 divisors, whose sum is σ = 54123558. Its totient is φ = 54123556.

The previous prime is 54123527. The next prime is 54123581. The reversal of 54123557 is 75532145.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33339076 + 20784481 = 5774^2 + 4559^2 .

It is a cyclic number.

It is not a de Polignac number, because 54123557 - 2⁶ = 54123493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54123527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27061778 + 27061779.

It is an arithmetic number, because the mean of its divisors is an integer number (27061779).

Almost surely, 2^54123557 is an apocalyptic number.

It is an amenable number.

54123557 is a deficient number, since it is larger than the sum of its proper divisors (1).

54123557 is an equidigital number, since it uses as much as digits as its factorization.

54123557 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21000, while the sum is 32.

The square root of 54123557 is about 7356.8714138552. The cubic root of 54123557 is about 378.2643769780.

The spelling of 54123557 in words is "fifty-four million, one hundred twenty-three thousand, five hundred fifty-seven".