157457143 has 2 divisors, whose sum is σ = 157457144. Its totient is φ = 157457142.

The previous prime is 157457129. The next prime is 157457173. The reversal of 157457143 is 341754751.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-157457143 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157457173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78728571 + 78728572.

It is an arithmetic number, because the mean of its divisors is an integer number (78728572).

Almost surely, 2^157457143 is an apocalyptic number.

157457143 is a deficient number, since it is larger than the sum of its proper divisors (1).

157457143 is an equidigital number, since it uses as much as digits as its factorization.

157457143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 58800, while the sum is 37.

The square root of 157457143 is about 12548.1928180914. The cubic root of 157457143 is about 539.9921615232.

The spelling of 157457143 in words is "one hundred fifty-seven million, four hundred fifty-seven thousand, one hundred forty-three".