54521977 has 2 divisors, whose sum is σ = 54521978. Its totient is φ = 54521976.

The previous prime is 54521947. The next prime is 54521981. The reversal of 54521977 is 77912545.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34621456 + 19900521 = 5884^2 + 4461^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54521977 is a prime.

It is not a weakly prime, because it can be changed into another prime (54521947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27260988 + 27260989.

It is an arithmetic number, because the mean of its divisors is an integer number (27260989).

Almost surely, 2^54521977 is an apocalyptic number.

It is an amenable number.

54521977 is a deficient number, since it is larger than the sum of its proper divisors (1).

54521977 is an equidigital number, since it uses as much as digits as its factorization.

54521977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 88200, while the sum is 40.

The square root of 54521977 is about 7383.8998503501. The cubic root of 54521977 is about 379.1902818498.

It can be divided in two parts, 545 and 21977, that added together give a palindrome (22522).

The spelling of 54521977 in words is "fifty-four million, five hundred twenty-one thousand, nine hundred seventy-seven".