54011557 has 4 divisors (see below), whose sum is σ = 54132300. Its totient is φ = 53890816.

The previous prime is 54011539. The next prime is 54011597. The reversal of 54011557 is 75511045.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 75511045 = 5 ⋅15102209.

It can be written as a sum of positive squares in 2 ways, for example, as 38019556 + 15992001 = 6166^2 + 3999^2 .

It is a cyclic number.

It is not a de Polignac number, because 54011557 - 2¹⁵ = 53978789 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 (54011597) 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, 59698 + ... + 60595.

It is an arithmetic number, because the mean of its divisors is an integer number (13533075).

Almost surely, 2^54011557 is an apocalyptic number.

It is an amenable number.

54011557 is a deficient number, since it is larger than the sum of its proper divisors (120743).

54011557 is a wasteful number, since it uses less digits than its factorization.

54011557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120742.

The product of its (nonzero) digits is 3500, while the sum is 28.

The square root of 54011557 is about 7349.2555405293. The cubic root of 54011557 is about 378.0032776887.

The spelling of 54011557 in words is "fifty-four million, eleven thousand, five hundred fifty-seven".