54775129 has 4 divisors (see below), whose sum is σ = 55808676. Its totient is φ = 53741584.

The previous prime is 54775093. The next prime is 54775141. The reversal of 54775129 is 92157745.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 92157745 = 5 ⋅18431549.

It can be written as a sum of positive squares in 2 ways, for example, as 40297104 + 14478025 = 6348^2 + 3805^2 .

It is a cyclic number.

It is not a de Polignac number, because 54775129 - 2⁷ = 54775001 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 54775091 and 54775100.

It is not an unprimeable number, because it can be changed into a prime (54775169) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 516694 + ... + 516799.

It is an arithmetic number, because the mean of its divisors is an integer number (13952169).

Almost surely, 2^54775129 is an apocalyptic number.

It is an amenable number.

54775129 is a deficient number, since it is larger than the sum of its proper divisors (1033547).

54775129 is a wasteful number, since it uses less digits than its factorization.

54775129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1033546.

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

The square root of 54775129 is about 7401.0221591345. The cubic root of 54775129 is about 379.7762510127.

The spelling of 54775129 in words is "fifty-four million, seven hundred seventy-five thousand, one hundred twenty-nine".