54840769 has 12 divisors (see below), whose sum is σ = 57782140. Its totient is φ = 52032960.

The previous prime is 54840727. The next prime is 54840787. The reversal of 54840769 is 96704845.

It can be written as a sum of positive squares in 6 ways, for example, as 4601025 + 50239744 = 2145^2 + 7088^2 .

It is not a de Polignac number, because 54840769 - 2⁷ = 54840641 is a prime.

It is a super-2 number, since 2×54840769² = 6015019889022722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54840719) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 50767 + ... + 51835.

Almost surely, 2^54840769 is an apocalyptic number.

It is an amenable number.

54840769 is a deficient number, since it is larger than the sum of its proper divisors (2941371).

54840769 is a wasteful number, since it uses less digits than its factorization.

54840769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1188 (or 1159 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 43.

The square root of 54840769 is about 7405.4553539941. The cubic root of 54840769 is about 379.9278925969.

The spelling of 54840769 in words is "fifty-four million, eight hundred forty thousand, seven hundred sixty-nine".