54390785 has 4 divisors (see below), whose sum is σ = 65268948. Its totient is φ = 43512624.

The previous prime is 54390779. The next prime is 54390827. The reversal of 54390785 is 58709345.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 36336784 + 18054001 = 6028^2 + 4249^2 .

It is a cyclic number.

It is not a de Polignac number, because 54390785 - 2¹⁴ = 54374401 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5439074 + ... + 5439083.

It is an arithmetic number, because the mean of its divisors is an integer number (16317237).

Almost surely, 2^54390785 is an apocalyptic number.

It is an amenable number.

54390785 is a deficient number, since it is larger than the sum of its proper divisors (10878163).

54390785 is a wasteful number, since it uses less digits than its factorization.

54390785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10878162.

The product of its (nonzero) digits is 151200, while the sum is 41.

The square root of 54390785 is about 7375.0108474496. The cubic root of 54390785 is about 378.8858988701.

The spelling of 54390785 in words is "fifty-four million, three hundred ninety thousand, seven hundred eighty-five".