54978167 has 2 divisors, whose sum is σ = 54978168. Its totient is φ = 54978166.

The previous prime is 54978151. The next prime is 54978179. The reversal of 54978167 is 76187945.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 54978167 - 2⁴ = 54978151 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54978067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27489083 + 27489084.

It is an arithmetic number, because the mean of its divisors is an integer number (27489084).

Almost surely, 2^54978167 is an apocalyptic number.

54978167 is a deficient number, since it is larger than the sum of its proper divisors (1).

54978167 is an equidigital number, since it uses as much as digits as its factorization.

54978167 is an evil number, because the sum of its binary digits is even.

The product of its digits is 423360, while the sum is 47.

The square root of 54978167 is about 7414.7263604263. The cubic root of 54978167 is about 380.2449182882.

The spelling of 54978167 in words is "fifty-four million, nine hundred seventy-eight thousand, one hundred sixty-seven".