54485557 has 4 divisors (see below), whose sum is σ = 62269216. Its totient is φ = 46701900.

The previous prime is 54485513. The next prime is 54485573. The reversal of 54485557 is 75558445.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 75558445 = 5 ⋅15111689.

It is a de Polignac number, because none of the positive numbers 2^k-54485557 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 (54485657) 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, 3891819 + ... + 3891832.

It is an arithmetic number, because the mean of its divisors is an integer number (15567304).

Almost surely, 2^54485557 is an apocalyptic number.

It is an amenable number.

54485557 is a deficient number, since it is larger than the sum of its proper divisors (7783659).

54485557 is an equidigital number, since it uses as much as digits as its factorization.

54485557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7783658.

The product of its digits is 560000, while the sum is 43.

The square root of 54485557 is about 7381.4332619079. The cubic root of 54485557 is about 379.1058315849.

The spelling of 54485557 in words is "fifty-four million, four hundred eighty-five thousand, five hundred fifty-seven".