54878143 has 2 divisors, whose sum is σ = 54878144. Its totient is φ = 54878142.

The previous prime is 54878123. The next prime is 54878149. The reversal of 54878143 is 34187845.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 54878143 - 2¹⁷ = 54747071 is a prime.

It is a super-2 number, since 2×54878143² = 6023221158256898, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 54878096 and 54878105.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54878149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27439071 + 27439072.

It is an arithmetic number, because the mean of its divisors is an integer number (27439072).

Almost surely, 2^54878143 is an apocalyptic number.

54878143 is a deficient number, since it is larger than the sum of its proper divisors (1).

54878143 is an equidigital number, since it uses as much as digits as its factorization.

54878143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 107520, while the sum is 40.

The square root of 54878143 is about 7407.9783342016. The cubic root of 54878143 is about 380.0141799879.

The spelling of 54878143 in words is "fifty-four million, eight hundred seventy-eight thousand, one hundred forty-three".