54087505 has 4 divisors (see below), whose sum is σ = 64905012. Its totient is φ = 43270000.

The previous prime is 54087503. The next prime is 54087511. The reversal of 54087505 is 50578045.

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 11785489 + 42302016 = 3433^2 + 6504^2 .

It is not a de Polignac number, because 54087505 - 2¹ = 54087503 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54087503) 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, 5408746 + ... + 5408755.

It is an arithmetic number, because the mean of its divisors is an integer number (16226253).

Almost surely, 2^54087505 is an apocalyptic number.

It is an amenable number.

54087505 is a deficient number, since it is larger than the sum of its proper divisors (10817507).

54087505 is a wasteful number, since it uses less digits than its factorization.

54087505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10817506.

The product of its (nonzero) digits is 28000, while the sum is 34.

The square root of 54087505 is about 7354.4207793680. The cubic root of 54087505 is about 378.1803703265.

The spelling of 54087505 in words is "fifty-four million, eighty-seven thousand, five hundred five".