54125551 has 4 divisors (see below), whose sum is σ = 54142600. Its totient is φ = 54108504.

The previous prime is 54125543. The next prime is 54125557. The reversal of 54125551 is 15552145.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 54125551 - 2³ = 54125543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54125557) 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, 2196 + ... + 10633.

It is an arithmetic number, because the mean of its divisors is an integer number (13535650).

Almost surely, 2^54125551 is an apocalyptic number.

54125551 is a deficient number, since it is larger than the sum of its proper divisors (17049).

54125551 is a wasteful number, since it uses less digits than its factorization.

54125551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17048.

The product of its digits is 5000, while the sum is 28.

The square root of 54125551 is about 7357.0069321702. The cubic root of 54125551 is about 378.2690222129.

Adding to 54125551 its reverse (15552145), we get a palindrome (69677696).

The spelling of 54125551 in words is "fifty-four million, one hundred twenty-five thousand, five hundred fifty-one".