54777645 has 24 divisors (see below), whose sum is σ = 102252696. Its totient is φ = 26967168.

The previous prime is 54777637. The next prime is 54777647. The reversal of 54777645 is 54677745.

It can be written as a sum of positive squares in 4 ways, for example, as 13329801 + 41447844 = 3651^2 + 6438^2 .

It is not a de Polignac number, because 54777645 - 2³ = 54777637 is a prime.

It is a super-3 number, since 3×54777645³ (a number of 24 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 54777645.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54777647) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 46234 + ... + 47403.

It is an arithmetic number, because the mean of its divisors is an integer number (4260529).

Almost surely, 2^54777645 is an apocalyptic number.

It is an amenable number.

54777645 is a deficient number, since it is larger than the sum of its proper divisors (47475051).

54777645 is a wasteful number, since it uses less digits than its factorization.

54777645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93661 (or 93658 counting only the distinct ones).

The product of its digits is 823200, while the sum is 45.

The square root of 54777645 is about 7401.1921337039. The cubic root of 54777645 is about 379.7820657102.

The spelling of 54777645 in words is "fifty-four million, seven hundred seventy-seven thousand, six hundred forty-five".