54145787 has 4 divisors (see below), whose sum is σ = 54233880. Its totient is φ = 54057696.

The previous prime is 54145781. The next prime is 54145811. The reversal of 54145787 is 78754145.

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 54145787 - 2⁶ = 54145723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54145781) 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, 43118 + ... + 44355.

It is an arithmetic number, because the mean of its divisors is an integer number (13558470).

Almost surely, 2^54145787 is an apocalyptic number.

54145787 is a deficient number, since it is larger than the sum of its proper divisors (88093).

54145787 is an equidigital number, since it uses as much as digits as its factorization.

54145787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88092.

The product of its digits is 156800, while the sum is 41.

The square root of 54145787 is about 7358.3820911937. The cubic root of 54145787 is about 378.3161576726.

The spelling of 54145787 in words is "fifty-four million, one hundred forty-five thousand, seven hundred eighty-seven".