54140779 has 8 divisors (see below), whose sum is σ = 67500288. Its totient is φ = 42187560.

The previous prime is 54140761. The next prime is 54140809. The reversal of 54140779 is 97704145.

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

It is a cyclic number.

It is not a de Polignac number, because 54140779 - 2⁹ = 54140267 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54140729) 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, 351487 + ... + 351640.

It is an arithmetic number, because the mean of its divisors is an integer number (8437536).

Almost surely, 2^54140779 is an apocalyptic number.

54140779 is a deficient number, since it is larger than the sum of its proper divisors (13359509).

54140779 is a wasteful number, since it uses less digits than its factorization.

54140779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 703145.

The product of its (nonzero) digits is 35280, while the sum is 37.

The square root of 54140779 is about 7358.0417911289. The cubic root of 54140779 is about 378.3044936950.

The spelling of 54140779 in words is "fifty-four million, one hundred forty thousand, seven hundred seventy-nine".