54378871 has 2 divisors, whose sum is σ = 54378872. Its totient is φ = 54378870.

The previous prime is 54378823. The next prime is 54378959. The reversal of 54378871 is 17887345.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54378871 is a prime.

It is a super-4 number, since 4×54378871⁴ (a number of 32 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54978871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27189435 + 27189436.

It is an arithmetic number, because the mean of its divisors is an integer number (27189436).

Almost surely, 2^54378871 is an apocalyptic number.

54378871 is a deficient number, since it is larger than the sum of its proper divisors (1).

54378871 is an equidigital number, since it uses as much as digits as its factorization.

54378871 is an evil number, because the sum of its binary digits is even.

The product of its digits is 188160, while the sum is 43.

The square root of 54378871 is about 7374.2030755872. The cubic root of 54378871 is about 378.8582325646.

The spelling of 54378871 in words is "fifty-four million, three hundred seventy-eight thousand, eight hundred seventy-one".