54501209 has 4 divisors (see below), whose sum is σ = 62287104. Its totient is φ = 46715316.

The previous prime is 54501173. The next prime is 54501229. The reversal of 54501209 is 90210545.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54501209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54501229) 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, 3892937 + ... + 3892950.

It is an arithmetic number, because the mean of its divisors is an integer number (15571776).

Almost surely, 2^54501209 is an apocalyptic number.

It is an amenable number.

54501209 is a deficient number, since it is larger than the sum of its proper divisors (7785895).

54501209 is an equidigital number, since it uses as much as digits as its factorization.

54501209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7785894.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 54501209 is about 7382.4934134749. The cubic root of 54501209 is about 379.1421298671.

The spelling of 54501209 in words is "fifty-four million, five hundred one thousand, two hundred nine".