54377809 has 2 divisors, whose sum is σ = 54377810. Its totient is φ = 54377808.

The previous prime is 54377801. The next prime is 54377839. The reversal of 54377809 is 90877345.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46621584 + 7756225 = 6828^2 + 2785^2 .

It is a cyclic number.

It is not a de Polignac number, because 54377809 - 2³ = 54377801 is a prime.

It is a super-2 number, since 2×54377809² = 5913892223280962, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (54377801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27188904 + 27188905.

It is an arithmetic number, because the mean of its divisors is an integer number (27188905).

Almost surely, 2^54377809 is an apocalyptic number.

It is an amenable number.

54377809 is a deficient number, since it is larger than the sum of its proper divisors (1).

54377809 is an equidigital number, since it uses as much as digits as its factorization.

54377809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 211680, while the sum is 43.

The square root of 54377809 is about 7374.1310674547. The cubic root of 54377809 is about 378.8557662263.

The spelling of 54377809 in words is "fifty-four million, three hundred seventy-seven thousand, eight hundred nine".