54240019 has 2 divisors, whose sum is σ = 54240020. Its totient is φ = 54240018.

The previous prime is 54240001. The next prime is 54240073. The reversal of 54240019 is 91004245.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 54240019 - 2¹⁹ = 53715731 is a prime.

It is a super-2 number, since 2×54240019² = 5883959322240722, which contains 22 as substring.

It is equal to p_3239611 and since 54240019 and 3239611 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 54239975 and 54240002.

It is not a weakly prime, because it can be changed into another prime (54243019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27120009 + 27120010.

It is an arithmetic number, because the mean of its divisors is an integer number (27120010).

Almost surely, 2^54240019 is an apocalyptic number.

54240019 is a deficient number, since it is larger than the sum of its proper divisors (1).

54240019 is an equidigital number, since it uses as much as digits as its factorization.

54240019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 54240019 is about 7364.7823457316. The cubic root of 54240019 is about 378.5354965439.

The spelling of 54240019 in words is "fifty-four million, two hundred forty thousand, nineteen".