56390143 has 2 divisors, whose sum is σ = 56390144. Its totient is φ = 56390142.

The previous prime is 56390137. The next prime is 56390189. The reversal of 56390143 is 34109365.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56390143 - 2⁵ = 56390111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56390443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28195071 + 28195072.

It is an arithmetic number, because the mean of its divisors is an integer number (28195072).

Almost surely, 2^56390143 is an apocalyptic number.

56390143 is a deficient number, since it is larger than the sum of its proper divisors (1).

56390143 is an equidigital number, since it uses as much as digits as its factorization.

56390143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9720, while the sum is 31.

The square root of 56390143 is about 7509.3370546274. The cubic root of 56390143 is about 383.4726534966.

The spelling of 56390143 in words is "fifty-six million, three hundred ninety thousand, one hundred forty-three".