55143967 has 2 divisors, whose sum is σ = 55143968. Its totient is φ = 55143966.

The previous prime is 55143961. The next prime is 55143973. The reversal of 55143967 is 76934155.

It is a balanced prime because it is at equal distance from previous prime (55143961) and next prime (55143973).

It is a cyclic number.

It is not a de Polignac number, because 55143967 - 2⁷ = 55143839 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55143961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27571983 + 27571984.

It is an arithmetic number, because the mean of its divisors is an integer number (27571984).

Almost surely, 2^55143967 is an apocalyptic number.

55143967 is a deficient number, since it is larger than the sum of its proper divisors (1).

55143967 is an equidigital number, since it uses as much as digits as its factorization.

55143967 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 113400, while the sum is 40.

The square root of 55143967 is about 7425.8983968271. The cubic root of 55143967 is about 380.6267749501.

The spelling of 55143967 in words is "fifty-five million, one hundred forty-three thousand, nine hundred sixty-seven".