45978143 has 2 divisors, whose sum is σ = 45978144. Its totient is φ = 45978142.

The previous prime is 45978091. The next prime is 45978167. The reversal of 45978143 is 34187954.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 45978143 - 2⁸ = 45977887 is a prime.

It is a super-2 number, since 2×45978143² = 4227979267456898, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 45978143.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45978193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22989071 + 22989072.

It is an arithmetic number, because the mean of its divisors is an integer number (22989072).

Almost surely, 2^45978143 is an apocalyptic number.

45978143 is a deficient number, since it is larger than the sum of its proper divisors (1).

45978143 is an equidigital number, since it uses as much as digits as its factorization.

45978143 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120960, while the sum is 41.

The square root of 45978143 is about 6780.7184722565. The cubic root of 45978143 is about 358.2480283448.

The spelling of 45978143 in words is "forty-five million, nine hundred seventy-eight thousand, one hundred forty-three".