54355557 has 4 divisors (see below), whose sum is σ = 72474080. Its totient is φ = 36237036.

The previous prime is 54355549. The next prime is 54355577. The reversal of 54355557 is 75555345.

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.

It is not a de Polignac number, because 54355557 - 2³ = 54355549 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 (54355507) 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, 9059257 + ... + 9059262.

It is an arithmetic number, because the mean of its divisors is an integer number (18118520).

Almost surely, 2^54355557 is an apocalyptic number.

It is an amenable number.

54355557 is a deficient number, since it is larger than the sum of its proper divisors (18118523).

54355557 is a wasteful number, since it uses less digits than its factorization.

54355557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18118522.

The product of its digits is 262500, while the sum is 39.

The square root of 54355557 is about 7372.6221251330. The cubic root of 54355557 is about 378.8040818545.

The spelling of 54355557 in words is "fifty-four million, three hundred fifty-five thousand, five hundred fifty-seven".