54919509 has 8 divisors (see below), whose sum is σ = 73351872. Its totient is φ = 36550080.

The previous prime is 54919489. The next prime is 54919511. The reversal of 54919509 is 90591945.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 54919509 - 2¹³ = 54911317 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54919549) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13657 + ... + 17214.

It is an arithmetic number, because the mean of its divisors is an integer number (9168984).

Almost surely, 2^54919509 is an apocalyptic number.

It is an amenable number.

54919509 is a deficient number, since it is larger than the sum of its proper divisors (18432363).

54919509 is a wasteful number, since it uses less digits than its factorization.

54919509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31467.

The product of its (nonzero) digits is 72900, while the sum is 42.

The square root of 54919509 is about 7410.7697980709. The cubic root of 54919509 is about 380.1096382624.

The spelling of 54919509 in words is "fifty-four million, nine hundred nineteen thousand, five hundred nine".