54257782409 has 2 divisors, whose sum is σ = 54257782410. Its totient is φ = 54257782408.

The previous prime is 54257782393. The next prime is 54257782417. The reversal of 54257782409 is 90428775245.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51653925625 + 2603856784 = 227275^2 + 51028^2 .

It is a cyclic number.

It is not a de Polignac number, because 54257782409 - 2⁴ = 54257782393 is a prime.

It is not a weakly prime, because it can be changed into another prime (54257782499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27128891204 + 27128891205.

It is an arithmetic number, because the mean of its divisors is an integer number (27128891205).

Almost surely, 2^54257782409 is an apocalyptic number.

It is an amenable number.

54257782409 is a deficient number, since it is larger than the sum of its proper divisors (1).

54257782409 is an equidigital number, since it uses as much as digits as its factorization.

54257782409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5644800, while the sum is 53.

The spelling of 54257782409 in words is "fifty-four billion, two hundred fifty-seven million, seven hundred eighty-two thousand, four hundred nine".