54517557 has 4 divisors (see below), whose sum is σ = 72690080. Its totient is φ = 36345036.

The previous prime is 54517553. The next prime is 54517559. The reversal of 54517557 is 75571545.

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 54517557 - 2² = 54517553 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 (54517553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9086257 + ... + 9086262.

It is an arithmetic number, because the mean of its divisors is an integer number (18172520).

Almost surely, 2^54517557 is an apocalyptic number.

It is an amenable number.

54517557 is a deficient number, since it is larger than the sum of its proper divisors (18172523).

54517557 is a wasteful number, since it uses less digits than its factorization.

54517557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18172522.

The product of its digits is 122500, while the sum is 39.

The square root of 54517557 is about 7383.6005444498. The cubic root of 54517557 is about 379.1800348116.

The spelling of 54517557 in words is "fifty-four million, five hundred seventeen thousand, five hundred fifty-seven".